What is JavaScript? Embedding JavaScript with HTML JavaScript conventions Variables in JavaScript
Javascript
91
1 Code timeout=setTimeout("updateTimeStamp();",5000); 1 – 10 Which one of the following is true of the code segment above? It causes setTimeout() to initialize the date and time library. It fires an event to invoke updateTimeStamp() every five seconds. It creates a Time object that ticks once every 0.5 seconds. It fires an event to invoke updateTimeStamp() in five seconds. It adds an onTimeOut event handler to the document. Ans: It fires an event to invoke updateTimeStamp() in five seconds. Code setTimeout("cycle()",3 * 3000); How often is function cycle() called in the above code? 3 milliseconds 3.003 seconds 3000 milliseconds 9 seconds 9000 seconds Ans: 9 seconds Date: 4/26/2009 Time: 10:13:9 currentDate = new Date() with (currentDate) { document.write("Date: "+getMonth() + "/"+getDate()+"/"+getYear()+"<BR>") document.write("Time: "+getHours() + ":"+getMinutes()+":"+getSeconds()) } What is the output of the code above in the user's browser? (Assume user time is Thursday July 9, 2003, and the current time is 3:30:33 P.M. EST) Date: July/9/2003 Time: 3:30:33 Date: July/9/03 Time: 15:30:33 Date: 6/9/2003 Time: 15:30:33 Date: 7/9th/2003 Time: 3:30:33
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Transcript of Javascript
1
Code timeout=setTimeout("updateTimeStamp();",5000); 1 – 10
Which one of the following is true of the code segment above?
It causes setTimeout() to initialize the date and time library.
It fires an event to invoke updateTimeStamp() every five seconds.
It creates a Time object that ticks once every 0.5 seconds.
It fires an event to invoke updateTimeStamp() in five seconds.
It adds an onTimeOut event handler to the document.
Ans: It fires an event to invoke updateTimeStamp() in five seconds.
Code setTimeout("cycle()",3 * 3000);
How often is function cycle() called in the above code?
3 milliseconds
3.003 seconds
3000 milliseconds
9 seconds
9000 seconds Ans: 9 seconds
Date: 4/26/2009 Time: 10:13:9
currentDate = new Date() with (currentDate) { document.write("Date: "+getMonth() + "/"+getDate()+"/"+getYear()+"<BR>") document.write("Time: "+getHours() + ":"+getMinutes()+":"+getSeconds()) }
What is the output of the code above in the user's browser? (Assume user time is Thursday July 9, 2003, and the current time is 3:30:33 P.M. EST)
Date: July/9/2003 Time: 3:30:33
Date: July/9/03 Time: 15:30:33
Date: 6/9/2003 Time: 15:30:33
Date: 7/9th/2003 Time: 3:30:33
2
Date: July/9th/2003 Time: 15:30:33
ANS: Date: 6/9/2003 Time: 15:30:33
Which one of the following is true of the "Math" object?
It must be instantiated with Math(base) before any methods are used.
It provides methods and properties for various arithmetic operations.
It holds the base (10, 16, e, etc.) used in mathematical operations.
It holds string properties containing all arithmetic symbols.
It performs common vector-based drawing functions.
ANS: It provides methods and properties for various arithmetic operations.
What code asks if the user wants a greeting and, if so, displays "wel.gif" and writes "Welcome!" in the document window?
if (confirmed("OK to welcome?")) { alert.write(<IMG SRC="wel.gif">); alert.write(<BR><H1>Welcome!</H1>); }
if (confirmed("OK to welcome?")) { alert('<IMG SRC="welcome.gif">'); alert("<BR><H1>Welcome!</H1>"); }
if (confirm("OK to welcome?")) { document.write('<IMG SRC="wel.gif">'); document.write("<BR><H1>Welcome!</H1>"); }
if (confirm("OK to welcome?")) { document.write(<IMG SRC="wel.gif">); document.write(<BR><H1>Welcome!</H1>); }
if (confirm("OK to welcome?")) { document.write(<IMG SRC="wel.gif">); alert(<BR><H1>Welcome!</H1>); }
Ans : Option 3 if (confirm("OK to welcome?")) { document.write('<IMG SRC="wel.gif">'); document.write("<BR><H1>Welcome!</H1>"); }
Sample Code document.TestForm.TestSelect.options[1].selected = true;
What does the above code do?
It selects the first option in the TestForm on the TestSelect.
It deselects the first option in the TestSelect on the TestForm.
It deselects the second option in the TestSelect on the TestForm.
It selects the second option in the TestSelect on the TestForm.
It selects the first option in the TestSelect on the TestForm.
3
Ans: It selects the second option in the TestSelect on the TestForm.
How do you change the document in the second frame to "test.html"?
top.frames[2].url = "test.html";
self.frames[1].url = "test.html";
self.frames[2].location.href = "test.html";
self.frames[1].href = "test.html";
self.frames[1].location.href = "test.html";
ANS: self.frames[1].location.href = "test.html";
The event method "setTimeout(code, time)" is a method belonging to which one of the following objects?
document
location
window
form
It does not belong to any object.
ANS: window
Which one of the following statements is true?
Global variables must be used first in order to let the browser know to initialize it.
Global variables must be declared in an outside file.
Global variables are properties of a global object.
Global variables are always constants.
Global variables are inaccessible from more than one window. ANS: Global variables are properties of a global object.
4
Which one of the following methods may need privileges?
escape(s)
document.clear()
form.submit()
navigator.javaEnabled()
self.close()
ANS: navigator.javaEnabled()
if (navigator.javaEnabled()) { function1() } else function2() .... a preference with the preference method requires the UniversalPreferencesRead privilege. ...
Sample Code <SCRIPT LANGUAGE="JavaScript"> <!-- var x = confirm('Is it OK?'); // --> </SCRIPT>
What does x contain if the user presses "OK" on the confirm dialog above?
'OK'
true
1
A reference to the confirm dialog
'Is it OK?'
ANS: true
What does window.length return?
The length in pixels
The number of open windows
The length as a percentage of screen size
The number of open browser windows
5
The number of frames in the window
ANS: The number of frames in the window
Sample Code var i = 0, j = 0; for ( ; i < 10; i++) j += ++i;
After the above code segment is run, what will be the values of 'i' and 'j'?
i = 12, j = 36
i = 11, j = 36
i = 10, j = 36
i = 11, j = 25
i = 10, j = 25
ANS: i = 10, j = 25
If a window contains only two sibling frames, which one of the following is equivalent to "parent" within one of those frames?
document
frames
top
window
self
ANS: top
Code var total=0; for(var j=0;j<10;j++) { for(var i=0;i<3;i++) { if(j > 3) break; total++; } }
What is the value of "total" after execution of the code above?
6
0
6
9
12
30 ANS: 12
Sample Code var win = window.open("", "newWindow", "height=200,width=200");
Referring to the above, in Netscape, which one of the following code segments centers the window "win" on the screen?
win.moveBy((win.screen.height - win.outerHeight) / 2, (win.screen.width - win.outerWidth) / 2);
win.moveBy((win.height - win.outerHeight) / 2, (win.width - win.outerWidth) / 2);
win.moveTo((win.height - win.outerHeight) / 2, (win.width - win.outerWidth) / 2);
win.center();
win.moveTo((win.screen.width - win.outerWidth) / 2, (win.screen.height - win.outerHeight) / 2);
ANS : win.moveTo((win.screen.width - win.outerWidth) / 2,
(win.screen.height - win.outerHeight) / 2);
Which one of the following is NOT a javascript data type?
Floating-point
String
Integers
Boolean
Date
Ans : Floating‐point
Sample Code var today; var tmpstr; today = Date();
Referring to the above, what method is automatically called if the following line were executed? Tmpstr = "Today = "+today;
toString()
display()
7
show()
append()
No method is automatically called.
Ans : No method is automatically called/append
(doubt for this answer---Pooja)
How is the error console opened from the browser's URL line in Netscape?
'javascript:debug'
'open javascript'
'javascript:open'
'javascript:error'
'javascript:'
Ans : 'javascript:'
Sample Code var index; for (index = 0; index < testArray.length; index++); document.writeln(index);
Which one of the following code segments produces the same results as the code segment above?
document.writeln(index = testArray.elements);
for (index = 1; index <= testArray.length; index++); document.writeln(index);
document.writeln(index = testArray.getElements());
document.writeln(index = getLength(testArray));
document.writeln(index = testArray.length);
ANS: document.writeln(index = testArray.length);
The form object has which event handler or handlers?
onChange, onSubmit
onSubmit, onReset
onLoad, onUnload
OnReset, onFocus, onSelect
onSubmit
8
ANS: onSubmit, onReset
Code function getRandom() { tdy = new Date(); var bigN=tdy.getSeconds()*tdy.getTime(); bigN *= Math.sqrt(tdy.getMinutes()); var randN = (bigN % 4) + 1; return Math.floor(randN); }
Which one of the following does the above function return?
A number (any type) between 1 and 5
The number 0
An integer between 1 and 4
An integer between 0 and 5
A number (any type) between 0 and 4
Ans : An integer between 1 and 4
Sample Code function checkField(field1, field2) { if ((field1 == "") && (field2 == "")) return true; else if ((field1 == "") || (field2 == "")) return false; else return true; }
When is a form that uses the above function in returning from its onclick event NOT submitted?
1 When field1 is not empty and field2 is not empty 2 When field1 is empty and field2 is not empty 3 When field1 is empty and field2 is empty 4 It will never be submitted. 5 It will always be submitted.
ANS : When field1 is empty and field2 is not empty.
The "length" property of the frames object refers to which one of the following?
The height in pixels of the frame
The total pixels (H times W) of the frame
The size of the frames array
The length of the frame's name property
The amount of time used to load the frame object
9
ANS : The size of the frames array
Which event handler is NOT VALID for the Textarea DOM object?
onChange
onFocus
onClick
onBlur
onSelect
ANS : onClick
Which one of the following is a benefit of using javascript for form validation?
Form data is encoded for transmission to an HTTP server.
It reduces network congestion, server load, and overall response time.
It provides for location specific string comparisons.
It automatically decodes encoded form data when there is an error.
It reduces client workload.
Ans : It reduces network congestion, server load, and overall response time.
Sample Code x = 1; y = 2; x = (++x ^ y--);
What is the value of x after execution of the above code?
-2
-1
0
1
2
Ans: 0
10
Sample Code x = 1; y = 2; z = 3; x = (x << 2) + (y >> 1) * (z << 1);
What is the value of x after execution of the above code?
10
11
12
13
14
ANS: 10
Sample Code var bool1 = true; var bool2 = false; var bool3 = false;
Referring to the above, which one of the following statements is true?
bool1 && bool3
bool2 ^ bool3
bool3 || bool2
bool2 = bool1
bool1 & bool2 ANS: bool2 = bool1
Code var ch1 = 'b'; var ch2; switch(ch1) { case 'a': ch2 = '1'; break; case 'b': ch2 = '2'; case 'c': ch2 = '3'; break; default: ch2 = '4'; }
Referring to the above code, what is the value of "ch2" after execution?
'1'
11
'2'
'3'
'4'
null
ANS: ‘3’
Sample Code var testSample = "Hello There!"; var result = testSample.slice(3, 7);
Referring to the sample code above, what is the value of "result" after execution?
'lo T'
'lo Th'
'llo Th'
'llo '
'llo T'
ANS: ‘lo T’
Sample Code <SCRIPT LANGUAGE="JavaScript"> <!-- var i; Object.prototype.array = new Array(3); var o = new Object(); o.array[0] = "2"; o.array[1] = "4"; o.array[2] = "6"; . . . <CODE HERE> // --> </SCRIPT>
Referring to the above, which code fragment loads i with the value of the second array element?
i = o.array(2);
i = o.prototype.array[2];
i = o.array["1"];
i = o.prototype.array[1];
i = o.array(1);
ANS: i = o.array["1"];
12
What code removes every 'x' from String "S"?
var myArray = S.clear('x'); S = myArray.join('');
var SCopy = ''; for(var i = 0; i < S.length; i++) if(S.charAt(i)!='x') {SCopy += S.charAt(i); S = SCopy;
while(i=1;i<S.length; i++) if(S[i] != 'x') S == S[i];
dowhile(var i=1; i<S.length; ++i) if(S[i] != 'x') S == S[i];
for(var i = 1; i < S.length; i++) { if(S.char(i) == 'x') S += S.charAt(i); }
ANS:Option 2
var SCopy = ''; for(var i = 0; i < S.length; i++) if(S.charAt(i)!='x') {SCopy += S.charAt(i); S = SCopy;
How do you get any URL arguments passed in through the URL?
Parse the URL.
document.url.getArgs()
document.url.args
window.args
window.document.args
ANS: Parse the URL
Which one of the following is NOT a method or property of the "history" object?
go()
list
forward()
length
back()
ANS: list
13
Which one of the following is a client-side JavaScript object?
Database
Cursor
Client
FileUpLoad
Retrieve
ANS: FileUpLoad
What code produces HTML output that displays an image?
document.write(IMG SRC="test.gif");
document.write(<IMG SRC="test.gif">);
document.write("IMG SRC='test.gif'");
document.write(<IMG SRC='test.gif'>);
document.write('<IMG SRC="test.gif">');
ANS: OPTION 5
How long does a cookie WITHOUT an expiry date last?
Until the browser is closed
Until the current document is unloaded
Until it gets an expiry date that is expired
Until it is erased
It lasts forever.
Ans: Until the browser is closed
Code total=0; for(var j=0;j<10;j++) { for(var i=0;i<3;i++) total++; }
What is the value of "total" after execution of the code above?
14
0
24
27
30
33
ANS: 30
ample Code function Square(length) { this.length = length; } function Square_area() { return this.length*this.length; }
Referring to the above, which one of the following code segments adds the Square_area function to the Square object as a property?
Square.prototype.area = Square_area;
Square.addProperty("area", Square_area);
Square.addProperty(Square_area);
Square.area(Square_area);
Square.area = Square_area;
ANS: Square.prototype.area = Square_area;
Which one of the following attributes CANNOT be removed when opening a new window?
Location Box
Status
TitleBar
MenuBar
ScrollBars
ANS:TITLEBAR
15
What code forces the full frameset to show when a page that is part of a frameset is loaded?
if(location==top.location) top.location.href="frameset2.html"
if(location==self.location) href="frameset2.html"
if(self.location==top.location) self.location.href="frameset2.html"
if(parent.location==self.location) parent.location.href="frameset2.html"
if(top.location==self.location) top.location.href="frameset2.html"
ANS: if(top.location==self.location) top.location.href="frameset2.html" if(self.location==top.location) self.location.href="frameset2.html" (most probably)
Sample Code var testDate = new Date();
What does the above variable testDate contain?
A Date object with a date of when it was created
A function to create a new Date object
An empty Date object with no assigned date
A Date variable waiting to get a Date object assigned to it
A string object representing the Date object created
Ans: A Date object with a date of when it was created
Code document.write('This text \\n is output\n')
Which one of the following statements is equivalent to the code above?
document.write('This text \n'); document.write(' is output\n')
document.write("This text is output")
document.writeln("This text \\n is output")
document.writeln('This text is output")
document.writeln('This text is output')
Ans: document.writeln("This text \\n is output")
16
Code var sample="test"; var result=sample.big();
Referring to the above code, what is the value of "result" after execution?
TEST
<BIG>test</BIG>
<BIG>TEST</BIG>
test
Unable to tell--big() is not defined.
ANS: test
Sample Code x = 0; y = 0; while (x < 5) { x++; y = x ^ 15; }
What is the value of y after execution of the above code?
0
1
5
10
12
ANS: 10
For which one of the following is an object's prototype property used?
To create a new object instance in testing code
To test a new object after creating an instance
To import an object from another file
To allow inheritance
To create a new object type
ANS: To create a new object type
17
Code 1. function factorial(num) { 2. var f = 1; 3. for(i=2;i<=num;i++) { 4. f += i; 5. } 6. return f; 7. }
Referring to the above code, function factorial should return the factorial of "num." Which line contains an error?
Line 1 Line 3 Line 4 Line 5 Line 6
ANS: Line 4
function wContent(thisPage) { parent.content.document.write("<HTML>" + "<HEAD></HEAD>"); parent.content.document.write("<HEAD>"); parent.content.document.write("<BODY>"); parent.content.document.write("Page "+ thisPage+".</BODY></HTML>"); parent.content.document.close(); }
The function above represents which one of the following concepts?
Local Data Types
Static Data Loading
Passing Frame Information
Dynamic Page Creation
Virtual Functions ANS: Dynamic Page Creation
Code var name = prompt("What is your name?","name"); var query = ""; document.write("<H1>" + name + "'s 10 favorite foods</H1>"); for(var j=1; j<=10; j++) { document.write(j + ". " + prompt('Enter food number ' + j,'food') + '<BR>'); }
Of people who visit a website site about their top 10 favorite foods, which one of the following is true of the above code?
18
It prints links to the user's ten favorite food web sites.
It tells visitors about their top 10 favorite foods.
It queries visitors about their top 10 favorite foods.
It informs users of the author's name and food preferences.
It asks for a password ten times.
ANS: It queries visitors about their top 10 favorite foods.
Code var circumference; var radius = 10;
Referring to the above code, what code calculates the circumference of a circle (2 * pi * radius)?
circumference = 2 * Math.PI * radius
circumference = 2 * (new Math().getPi()) * radius
circumference = Math.PI * Math.sqr(radius)
circumference = 2 * (new Math().PI) * radius
circumference = 2* Math.getPi() * radius
ANS: var circumference;
var radius = 10; circumference = 2 * Math.PI * radius
Code var newWindow = open(url, title, args);
To which one of the following does newWindow.opener refer in the above code?
The URL with which newWindow is opened
The navigator object
newWindow itself
The top window
The window that opened newWindow
ANS: The window that opened newWindow
What is the value of window.name when run in the original browser window?
'undefined'
'self'
19
'Document 1'
'window'
''
Ans: “
ample Code var x, y; for (x = 0; x <= 5; x +=2) for (y = 0; y <= 5; y++) if (y > 3) continue;
After executing the above code segment, what is the value of y?
3
4
5
6
7
Ans: 6
Sample Code document.writeln(eval(new String("22") + " + " + new String("5")));
What does the above code segment output?
undefined
Nothing
225
22 + 5
27
Ans: 27
Which one of the following is NOT a used to emulate an event?
focus()
submit()
20
select()
load()
click()
ANS: submit() load()
Sample Code x = 0; y = 0; for (x = 0; x < 4; x++) { switch (x) { case 0: break; case 1: y = 2 << x; break; case 2: y *= x; break; default: y += x; break; } }
What is the value of y after execution of the above code?
0
1
2
11
12
Ans: 11
Sample Code var total=0; for (var x = 1; x < 5; x = x << 1) { total += x; }
What is the value of "total" after execution of the above code?
0
21
1
3
7
15
ANS: 7
Sample Code <FORM action="someAction" method="POST" name="TestForm"> <SELECT name="TestSelect" MULTIPLE > <OPTION selected>Option 1</OPTION> <OPTION>Option 2</OPTION> <OPTION>Option 3</OPTION> <OPTION selected>Option 4</OPTION> </SELECT> </FORM>
Referring to the above code, how do you clear all items selected?
document.TestForm.TestSelect.clear();
document.TestForm.TestSelect.multiple = false;
document.TestForm.TestSelect.selected = false;
document.TestForm.TestSelect.options.clear();
document.TestForm.TestSelect.selectedIndex = -1;
ANS: document.TestForm.TestSelect.options.clear();
document.TestForm.TestSelect.selectedIndex = -1;
Which one of the following code segments displays the value of the third element of the second form in the parent frame?
document.output(parent.document.forms[2].elements[3].value);
document.writeln(parent.document.forms[1].elements[2].value);
document.writeln(parent.document.forms[2].elements[3].value);
document.writeln(parent.document.forms[2].elements[3].getValue());
document.writeln(parent.document.forms[1].elements[2].getValue());
ANs: document.writeln(parent.document.forms[1].elements[2].value);
22
Which one of the following statements does NOT declare a variable named "test"?
var test
var test = 10
test = 10
var test = x
var.test
ANS: var.test
Which one of the following core objects is used for pattern matching?
Format
String
RegExp
StringFormat
Pattern
ANS: RegExp
Sample Code <SCRIPT LANGUAGE="JavaScript"> <!-- function onChecked() { if (document.CheckboxForm.On.checked) document.CheckboxForm.Off.checked = false; else
23
document.CheckboxForm.Off.checked = true; } // --> </SCRIPT> <FORM NAME="CheckboxForm"> <INPUT TYPE="checkbox" NAME="On" onClick="onChecked();"> <INPUT TYPE="checkbox" NAME="Off"> </FORM>
Referring to the above, what happens when the "On" checkbox is checked for the first time?
The "Off" checkbox is checked.
The "On" checkbox is unchecked.
The "Off" checkbox is reversed.
The "Off" checkbox is unchecked.
Nothing happens.
ANS: Nothing happens.
Sample Code <FORM METHOD="POST" NAME="TestForm" ACTION="/cgi-bin/process.cgi" TARGET="frame2"> <INPUT TYPE="submit" VALUE="Submit"> </FORM> <SCRIPT LANGUAGE="JavaScript"> <!-- document.TestForm.target = "frame1"; // --> </SCRIPT>
Where do the results from submitting the above form go?
To a new window
To a target named 'frame2'
To the topmost window
To a target named 'frame1'
To the same frame in which the form is
ANS: To a target named 'frame2'
To a target named 'frame1'
Code var s = "test"; s.big(); s.blink(); s=s.bold();
24
s=s.strike(); s=s.fontsize(7); document.write(s.italics());
Referring to the above code, the html document shows the word "test" with what style characteristics?
Blinking, bold, strikethrough, size 8, and italic
Default styles for browser
Bold, strikethrough, size 7, and italic
Size 7 and italic
Italic
ANS: Bold, strikethrough, size 7, and italic
Code var i=0; for(j=0;j<=10;j+=5;) { i++; }
Referring to the above code, what is the value of "i" after execution?
0
2
3
10
11 ANS:3
ode expires=new Date(); expires.setTime(expires.getTime() + 24 * 60 * 60 * 365 * 1000); document.cookie = "c1=data; expires=" + expires.toGMTString();
Referring to the above code, when does cookie "c1" expire?
In 1 month
In 1 year
In 24 years
In 1000 years
Immediately
ANS: In 1 year
Code function setvals(object s) {
25
s.name = "John"; s.age = 15; s.id = 100; } setvals(student);
Referring to the above code, the object "student" has how many properties?
1
2
3
At least 3
More than 3
ANS: At least 3
Which one of the following events can be used to display a confirmation box when a user submits a form?
onChange
onSubmit
onForm
onReset
onMouseover
ANS: onSubmit
Which is a "string" property?
substring
size
name
length
value
ANS: length
testText = "This is";
testMessage = testText + " " + new Number(4) + " pages long!";
alert(testMessage);
26
ANS: This is 4 pages long!
Of which one of the following is the keyword "delete" used?
To delete a property from an object
To delete the defaults in the document
To delete all the images for a lower bandwidth
To delete a variable from within a function
To delete a file on the client computer ANS To delete a property from an object delete The delete operator is used to delete an object, an object's property or a specified element in an array, returning true if the operation is possible, and false if not. With the defined object 'fruit' below, the following delete operations are possible:
Q:
var total=0; for(var j=0;j<5;j++) { for(var i=0;i<3;i++) { if(j > 3) total--; else total++; } }
What is the value of "total" after execution of the code above?
0
6
9
12
30 ANS: 9
Which code segment changes the background color of the third frame to white?
self.frames[2].bgColor = "white";
self.frames[2].document.bgColor = "0xFFFFFF";
self.frames[3].document.bgColor = "0x000000";
self.frames[2].document.bgColor = "0x000000";
self.frames[3].document.bgColor = "white";
ANS; WRONG OPTIONS - self.frames[3].document.bgColor = "white";
self.frames[2].document.bgColor = "0xFFFFFF";
Setting a new value to which one of the following redirects the browser to a new URL.
27
document.URL
document.location.href
location.URL
window.location.href
link.href
ANS: document.location.href
Q:<html>
<body>
<script type="text/javascript">
x = 0;
</SCRIPT>
<SCRIPT language="JavaScript" src="external.js">
for ( ; x < 20; x += 3 )
x++;
x = x * 3;
document.write(x);
</SCRIPT>
<SCRIPT language="JavaScript">
x = x * 10;
document.write(x);
</script>
</body>
</html>
Ans: 0
Q:<FORM METHOD="POST" ACTION="/cgi-bin/process.cgi" NAME="TestForm"> <INPUT TYPE="hidden" NAME="first">
28
<INPUT TYPE="hidden" NAME="second"> <INPUT TYPE="hidden" NAME="third"> </FORM>
Referring to the above, what does document.TestForm.elements[document.TestForm.length] return?
'first' input object
'second' input object
'third' input object
undefined
An error dialog is displayed. ANS: undefined
Password inherits from which one of the following classes?
Textarea
Hidden
Input
String
Login ANS: Hidden Input
Code function callOther(){ return (otherToCall()); } function otherToCall(){ var x = 2, y = 5; return (x + y); }
Referring to the above, what is returned when callOther is called?
7
25
null
undefined
An error occurs c5-mc. ANS 7
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Functions can be created as objects and assigned to a variable using which one of the following constructors?
Inherit
This
new
Function
set ANS: new (it should be- Function)Pooja as I have referred from the book… Function
What event handling code can create forward and back buttons in an HTML that behave as the browser toolbar?
back: onClick="history.go(-2);"> forward: onClick="history.forward;">
back: onClick="history.back();"> forward: onClick="history.forward();">
back: onMouseOver="history.back(-1);"> forward: onMouseOver="history.forward(0);">
back: onMClick="history.go;"> forward: onMClick="history.forward;">
back: onClick="history.go(0);"> forward: onClick="history.forward(0);"> ANS: back: onClick="history.back();"> forward: onClick="history.forward();">
Code var name=prompt("Promt msg","Hello")
Referring to the above code, what code displays the value of "name" in a document?
window.document.name.write();
write(name);
document(name);
window.name.write();
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document.write(name); ANS: document.write(name);
5;
Referring to the above code, what is the value of variable "x"?
0
.1
.2
.3
.5 ANS: .1
Which one of the following code segments is used to compute x to the power of y?
Math.pow(x, y)
x ** y
x ^ y
y ^ x
Math.exp(x, y) ANS: Math.pow(x, y)
ject is often used to enable Html documents to have buttons that highlight when the mouse hovers over them?
<SCRIPT LANGUAGE="JavaScript"> <!--
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function testVariable(x) { var returnVar; switch (x) { case 1: returnVar = 'one'; case 2: returnVar = 'two'; case 3: returnVar = 'three'; case 4: returnVar = 'four'; default: returnVar = 'none'; } return (returnVar); } // --> </SCRIPT>
What value does the above function return if x is passed into it as 2?
'one'
'two'
'three'
'four'
'none' ANS:’none’
Q:function submitIt(form) { dOpt = -1; for(j=0; j<form.DCt.length;j++) { if(form.DCt[j].checked) dOpt = j; } if(form.DCt[dOpt].value == "4Door" && form.sunroof.checked) { alert("sunroof is not available" + " on the 4 door model"); return false; } return true; }
Referring to the above code, what type of form elements are "4Door" and "sunroof," respectively?
Text field, checkbox
Pull-down menu option, pull-down menu option
Pull-down menu option, radio button
Radio button, checkbox
Check box, text field ANS:Radio button, checkbox
'checked' is applied to
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+----------------+--------------------------------------------------------------+| Applied_To |<input type="checkbox"> <input type="radio"> |+----------------+--------------------------------------------------------------+
Q:<SCRIPT LANGUAGE="JavaScript"> <!-- var x = new Number(16); var y = x.toString(15); // --> </SCRIPT>
What does y contain after execution of the above code?
"0"
"10"
"11"
"15"
"16" ANS: “11”
e Code var x = 9; x = x >> 2; x = x << 2; x = x ^ 3;
What is the value of x after the above code is run?
8
11
27
512
729 ANS:11
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Q: pgAry=new Array("","3a.htm","3b.htm","3c.htm");
What code follows the above code in the <HEAD> section of a frame that serves as a navigation bar to load contentframe?
function setContent(this.Pg) { content.document.href = pgAry[this.Pg]; }
function setContent(thisPg) { parent.content.document.href = pgAry[thisPg]; }
function setContent(thisPg) { parent.document.location = pgAry[thisPg]; }
function setContent(thisPg) { parent.document.location.href = pgAry[this.Pg]; }
function setContent(thisPg) { parent.content.document.location.href= pgAry[thisPg]; } ANS: function setContent(thisPg) { parent.content.document.href = pgAry[thisPg]; } } function setContent(thisPg) { parent.content.document.location.href= pgAry[thisPg]; }
e Code <FORM NAME="TestForm"> <INPUT TYPE="checkbox" NAME="check" onClick="document.TestForm.check.checked = false; return true;"> <INPUT TYPE="submit" VALUE="Submit"> </FORM>
Which one of the following is true about the above form?
The checkbox is always unchecked.
Clicking the checkbox will submit the form.
The checkbox is always checked.
It has one element.
It uses the POST method as default. ANS: The checkbox is always unchecked.
/* document.writeln("a"); document.writeln("b"); */ document.writeln("c");
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document.writeln("d"); // document.writeln("e"); /**/ document.writeln("f");
Referring to the above, what does the user see in the browser output?
a b c d e f
c d
c d e f
c d f
d f
ANS: c d f
Sample Code <SCRIPT LANGUAGE="JavaScript"> <!-- var y; function modifyVariables(x) { var z = 5; x += 2; y += x + z; } // --> </SCRIPT> . . . <SCRIPT LANGUAGE="JavaScript"> <!-- var x = 1; var y = 2; var z = 3; modifyVariables(x); document.writeln(x); document.writeln(y); document.writeln(z); // --> </SCRIPT>
What is the output after the above scripts are run?
1 10 3
3 8 3
1 8 3
1 2 3
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3 10 3
Ans: 1 10 3
Sample Code <INPUT TYPE="button" onClick="document.location.href = document.links[1].href; return false;">
What is the above code segment simulating?
Clicking on the second link in the document
Going back to the previous document
Reloading the document from the link into this document
Submitting the form
Resetting the form Ans: Clicking on the second link in the document I want to change the page by attaching an onclick event to an HREF, like this: Quote:
<a href="" onclick="document.location.href = 'http://www.cnn.com/'"> test</a>
If you do it that way you need to return false <a href="" onclick="document.location.href = 'http://www.cnn.com/' ; return false"> test</a>
Which one of the following is NOT an event handler for DOM objects?
ondragdrop
onload
onexit
onblur
Onerror ANS: onexit
Q: <SCRIPT LANGUAGE="JavaScript"> <!-- var x = 0, y = 0, z = 0; document.writeln(x++); document.writeln(++y); document.writeln(--x + ++z); // --> </SCRIPT>
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What is output from the above code segment?
0 1 1
1 1 0
0 0 0
0 1 0
1 1 1 ANS: 0 1 1
What is the INDEX of the last frame in a frames[] array?
parent.frames.[3]
parent.frames[]
parent.frames.last
parent.frames.length
parent.frames.[NULL] ANS:parent.frames.length
Code for(i=0;i<sp.length;i++) if(chk==sp.charAt(i)) return true; return false;
What code is equivalent to the code above?
return(sp.lastIndexOf(chk,chk.length)==0 ? false:true)
if(sp.indexOf(chk,0)>=0) out=true; return false;
return(sp.indexOf(chk,chk.length)<=0 ? false:true)
if(sp,lastIndexOf(chk,chk.length)>0) return(true); return false;
return(sp.indexOf(chk, 0)<0 ? false:true ANS: return(sp.indexOf(chk, 0)<0 ? false:true
Sample Code
var testString = "Hello World!"; var x = testString.lastIndexOf("l", 0);
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What is the value of x after execution of the above code segment?
-1
2
3
9
10 ANS: -1
Which one of the following code segments sets the checkbox1 in form1 to "checked" if the checkbox1 in a sibling document in form1 is checked?
if (top.sibling.document.form1.checkbox1.checked) self.document.form1.checkbox1.checked = true;
if (top.sibling.document.form1.checkbox1.checked) document.sibling.document.form1.checkbox1.checked = true;
if (window.sibling.document.form1.checkbox1.checked) self.document.form1.checkbox1.checked = true;
if (self.document.form1.checkbox1.checked) parent.sibling.document.form1.checkbox1.checked = true;
if (parent.sibling.document.form1.checkbox1.checked) self.document.form1.checkbox1.checked = true ANS: if (parent.sibling.document.form1.checkbox1.checked) self.document.form1.checkbox1.checked = true
Sample Code var plane = new Plane();
Referring to the above, what is the one way to create a new property called "engine" for the "plane" instance object?
plane.property = new Engine();
new Engine(plane);
plane.property(new Engine());
plane.engine = new Engine();
plane(new Engine()); ANS: plane.engine = new Engine();
What code automatically scrolls (vertically) a document 100 pixels down when it is loaded in a window?
setTimeout('newWindow.scroll(100,0)',100)
setTimeout('newWindow.scroll(0,100)',1000)
Timeout(newWindow.scroll(100),1000)
setTime('newWindow.scroll(100,0)',100)
scroll(newWindow(0,100),100) ANS: setTimeout('newWindow.scroll(0,100)',1000)
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Which of the following DOM object or objects are associated with the onFocus event handler?
Password
Password and Hidden
Parent
Hidden
Hidden and Parent ANS:PASSWORD
Which objects CANNOT be included in a form object?
document
submit
FileUpload
select
Radio ANS:document
You need UniversalBrowserWrite privilege in order to do all of the following EXCEPT which one?
Open a window smaller than 100 pixels on a side
Change the location bar, directory bar, or personal bar of the browser
Change the properties of and Event object
Read the preferences with the Navigator.preference() method
Change the menubar, status line, or toolbars of the browser ANSWER: Read the preferences with the Navigator.preference() method (doubt fr this answer, don’t know d correct answer- POOJA)
What does the export keyword do?
It creates a Java bytecode file for the exported content.
It writes the script to a file.
It allows access from another execution context.
It takes all imported parameters and sends them to the specified program.
It tells a script which core objects to unload. ANS: It allows access from another execution context.
Q:unescape(argument);
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Which one of the following is true of the above statement?
It replaces Html character entities such as &nbsp; with their printed characters.
It removes all url encoding from a string.
It removes line breaks from a string.
It prevents the user from leaving the current document.
URL encodes the value property of the "argument" object. ANS: It removes all url encoding from a string.
Q:j = 0; total = 0; do { j++; total = total ^ j; } while (j < 2);
What is the value of "total" after execution of the above code?
0
1
2
3
4
ANS:3
Which method is used to end a document's output stream?
window.close()
window.end()
document.close()
window.close(window.document)
document.end() ANS: document.close()
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function getRandom() { tdy = new Date(); var bigN=tdy.getSeconds()*tdy.getTime(); bigN *= Math.sqrt(tdy.getMinutes()); var randN = (bigN % 4) + 1; return Math.floor(randN); }
Which one of the following does the above function return?
A number (any type) between 1 and 5
An integer between 1 and 4
A number (any type) between 0 and 4
The number 0
An integer between 0 and 5 ANS: An integer between 1 and 4
Q:<FORM NAME="TestForm"> <INPUT TYPE="hidden" NAME="hiddenInput"> <INPUT TYPE="button" VALUE="Change Input" onClick="changeValue(this.form);"> <INPUT TYPE="submit" VALUE="Submit"> </FORM>
Referring to the sample code above, which one of the following functions assigns another value to the hidden input?
function changeValue(f){ var j = prompt("New Value", ""); f.hiddenInput = j; }
function changeValue(f){ var j = prompt("New Value", ""); f[hiddenInput].value = j; }
function changeValue(f){ f[hiddenInput] = prompt("New Value", ""); }
function changeValue(f){ f.hiddenInput.value = prompt("New Value", ""); }
function changeValue(f){ var j = prompt("New Value", ""); f.forms.hiddenInput.value = j; }
ANS: function changeValue(f){ f.hiddenInput.value = prompt("New Value", ""); }
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Q:Which one of the following is true of an event?
It is the execution of any function.
It is a signal generated when a specific action occurs.
It is the start of any script block execution.
It is a user-generated action.
It is the execution of any script statement. ANS:It is a signal generated when a specific action occurs.
Sample Code var x = 0; var y = 3;
Referring to the above code, which one of the following is true?
x == y - 3
x = y
y < x
x * y > 0
y * -3 > 0 ANS: x == y - 3
Sample Code <FORM action="someAction" method="POST" name="TestForm"> <SELECT name="TestSelect" MULTIPLE > <OPTION selected>Option 1</OPTION> <OPTION>Option 2</OPTION> <OPTION>Option 3</OPTION> <OPTION selected>Option 4</OPTION> </SELECT> </FORM>
Q:
<script language=javaScript> function surfto(form) { var idx=form.s1.selectedIndex if(form.s1.options[idx].value != 0) location=form.s1.options[idx].value; } </SCRIPT><FORM name="form1">
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<SELECT name=s1 onChange="surfto(this.form)" size=1> <OPTION selected value=0>Choose One <OPTION value=u2.htm>U2 <OPTION value=u3.htm>U3 <OPTION value=u4.htm>U4</SELECT> </FORM>
Pull down with 4 choices
Which property is used to access the number of elements in a form?
elements
method
length
count
number ANS: length
Sample Code var testVar = Math.ceil(Math.random() * 100);
Referring to the above, what is range of variable "testVar"?
-99 to 100
0 to 99
0 to 100
1 to 99
1 to 100 ANS: 1 to 100
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Generally speaking, the "onUnload" event handler is used to do which one of the following?
Choice 1
Remove a document from browser cache
Choice 2
Unload an HTML document
Choice 3
Perform actions after a document is unloaded
Choice 4
Perform actions before a document is unloaded
Choice 5
Close a window or frame objects (I think itz answer is option 5 please verify- Pooja) Perform actions before a document is unloaded
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JavaTM Applet Reference
1. The Java <APPLET> HTML Tag 2. Applet Security Model 3. Technical Notes
1. The Java <APPLET> HTML Tag
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To embed any Java applet within an HTML web page, you must use the <APPLET> tag. See the table to the right for the <APPLET> tag syntax (grayed options are optional; bold text is used as-is; italic text is information that you must provide). code=class-filename -- code="pmvr.class" -- The filename of the applet to load (which always ends in .class). It will load from the directory/folder listed by the codebase attribute listed below. width=pixels -- width=500 -- The width, in pixels, of the applet. This may also be a percentage, like 20%, but rarely is. height=pixels -- height=250 -- The height, in pixels, of the applet. This may also be a percentage, like 20%, but rarely is. archive=jar-file -- archive="pmvr.jar" -- The name of a jar file, which contains the *.class files for you applet. Note that files in the JAR must be in stored format (no compression). Otherwise, if you use compression, you limit yourself to Java 1.1 or later compatibility. name=instance-name -- name="pmvr" -- Your name for the applet, which can be any text that makes sense to you. This allows applets wweb page to find each other and it allows for you to control the applets via JavaScript. This attribute is optional. codebase=url -- codebase=".." -- The URL to the directory/folder containing the applet code (class files). An absolute URL can be speci(useful for hosting PMVR tours on multiple domains). A relative URL allows the applet to work on both web servers and the local file systeThe relative URL is relative to the document's base URL defined by the BASE tag. If the document does not define a BASE tag, it is relativthe directory/folder containing the HTML file. align=alignment -- align="left" -- The alignment of the applet. It behaves (and has the same options) as the IMG tag align attribute.attribute is optional. vspace=pixels -- vspace=3 -- The vertical space, in pixels, between the applet and surrounding text. It behaves the same as the IMG tavspace attribute. This attribute is optional. hspace=pixels -- hspace=3 -- the horizontal space, in pixels, between the applet and surrounding text. It behaves the same as the IMG hspace attribute. This attribute is optional. MAYSCRIPT -- This attribute allows you to use JavaScript within an applet. If you want to use JavaScript, you must grant the applet accesJavaScript by using the MAYSCRIPT attribute, otherwise the applet is not permitted to use JavaScript. If you use MAYSCRIPT on one applweb page, you will need to use MAYSCRIPT on all applets in the web page. Please refer to the 12/30/1999 tech note [§3] for details. <param name=parameter value=value> -- Applet parameters are used to configure an applet. Just use as many param tags as needed toconfigure the parameters (the parameters are always specific to the particular applet you are using). Please note that param tags are defwithin the APPLET tag. AlternateHTML -- If the <APPLET> tag is not supported by a web browser, the HTML in this section will be displayed. Otherwise, the applshown and the HTML in this section is ignored. For more information about the <APPLET> tag, visit Sun's Applet tag reference. 2. The Java Applet Security Model A Java VM (virtual machine) is what allows Java applets to run within web browsers. And all modern web browsers come with a Java VM.applets are safe to run on your computer because the Java VM prevents a Java applet from accessing resources (files/network/memory/ethat it is not authorized to access. Applets can be run in a web browser either from a web server, or from the local file system (disk/CD). Web Server: When a Java VM runs a Java applet from a web server, the Java applet is authorized to access any file on the web server tthe applet came from, but the applet can not access any file on another web server or any file on the local file system (your PC). Local File System: However, when a Java VM runs a Java applet from a local file system (your hard drive), the Java applet is authorizedaccess only files in the directory that the applet came from (or any subdirectories). Also, the Java VM prevents an applet from accessing the root of any drive/CD, as detailed in the 06/20/2000 tech note [§3], as operating system (OS) configuration files (config.sys, autoexec.bat, etc) are usually located there. For example, the following table summarizes what an applet, running from an HTML file test.html in the tours directory (with the class placed in the same tours directory) is allowed to access:
<applet code=class-filename width=pixels height=pixels archive=jar-file name=instance-name codebase=url align=alignment vspace=pixels hspace=pixels MAYSCRIPT > <param name=parameter1 value=va <param name=parameter2 value=va . . . alternateHTML </applet>
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Can an applet in test.html (in tours folder) access...
this image when run from http://www.xyz.com/tours/ c:/tours/
../pan1.jpg yes NO
../images/pan2.jpg yes NO
./pan3.jpg yes yes
./images/pan4.jpg yes yes
http://www.xyz.com/any.jpg NO NO
Notice the discrepancy in access to pan1.jpg and pan2.jpg. Depending upon where test.html is accessed from (a web server or the lochard drive), access to the same image can be either allowed or denied. The problem is that running from the local hard drive is more restrictive than running from a web server. Because when running from a local hard drive, only files in the same directory as the applet cfiles (or subdirectories) can be accessed by the applet. With proper planning, and by using the Java applet codebase tag, this problem can be avoided. Namely, create all tours within a directorand use the codebase attribute within any <APPLET> tags [§1] in HTML to refer back to the one set of Java class files in the root of the directory tree you created.
3. Java Applet Technical Notes Java Console TIP: If you are experiencing problems with an applet, the first step is to open the 'Java Console' in your browser to checkerror messages:
• Internet Explorer (Sun's Java): The Java Console option appears under the Tools menu. • Firefox: Right click on the Java tray icon and select 'Java Console'. • Netscape Communicator: The Java Console is located in the 'Tools / Web Development' menu (or under 'Communica
menu in older versions). • Internet Explorer (Microsoft Java): The Java Console must first be enabled in 'Tools / Internet Options / Advanced
Microsoft VM / Java console enabled'. After restarting your browser, the 'Java Console' option will be available under th'View' menu.
03/28/2006 -- Activating ActiveX Controls (Java) in Internet Explorer -- Microsoft has changed how user's interact with ActiveX controls on web pages. Previously, you could interact immediately with controls. However, now there is an extra click. Full details and a workaround. NOTE: the need for this extra click has been removed by Microsoft in April 2008. 01/04/2006 -- Internet Explorer on Mac should no longer be used -- Microsoft's Internet explorer for the Mac is no longer a produApple's Safari web browser should be used instead. 02/19/2001 -- Java Applets Cannot Be JavaScript'ed in Mac Internet Explorer -- Microsoft Article ID Q190283 has complete detasummary, Microsoft does not support JavaScript to Java communication on the Mac. However, please note that Netscape on the Mac andApple's Safari web browser both do support scripting. To work around this problem, use a web browser that works, or use Native scriptininstead of JavaScript scripting. 10/30/2000 -- Do not use spaces in filenames -- Do not use spaces in the filenames of images, etc (possible under a Windows servit appears that this can cause problems with some browser / server combinations. Namely, using a URL with a space works under IE (theis automatically converted to %20), but fails under Netscape. 09/08/2000 -- Netscape cannot read some JPEGs -- Some people have reported that a panorama displays fine in Internet Explorerdoes not appear when using Netscape Navigator (and that the Netscape java console window reports a "sun.awt.image.ImageFormatException: Image too wide for this implementation" error). This particular problem has been tracedNetscape being unable to read the JPEG at all. To test this, create a URL that points directly to the JPEG image file on the server and testboth Netscape and Internet Explorer. If it does not appear in Netscape but it does within Internet Explorer, then you have run into this problem. The graphics program you are using is producing a JPEG that Netscape is unable to read! Whether this is a problem with the proyou are using to write the JPEG (but Internet Explorer works) or with Netscape is unknown. The work-around is to use another graphics program to write the JPEG. 06/24/2000 -- Avoid using transparent GIF images -- Make sure that you avoid using transparent GIF images in applets, if possibleappears that many Java VM's take a significant performance hit in order to display transparent GIF images. While transparent GIF imageswork, they may dramatically show down the applet and cause jerky displays. 06/20/2000 -- Files in the root of a drive/CD cause security errors -- If you attempt to locate class or image files into the root directory of a drive or CD, you will experience problems due to the Java applet security model [§2] (that prevents applets from accessing
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root of a drive or CD). The work-around is to move your class files and images into a directory/folder. 12/30/1999 -- MAYSCRIPT and Netscape -- If you use the MAYSCRIPT applet tag on one applet, you must use the MAYSCRIPT tag oapplets on a web page. This is due to a bug in the Netscape web browsers. If you use MAYSCRIPT in only one applet, a second applet canlonger communicate with the first. Please note that this bug only exists in the Netscape browsers and not in the Microsoft browsers.
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The "MAYSCRIPT" attribute of the HTML <APPLET> element is used to do which one of the following?
To create an applet To end a script when an error occurs To convert a script to binary code To replace an applet with an equivalent script To give a Java applet access to a JavaScript script
ANS- To give a Java applet access to a JavaScript script
Which one of the following is a correct way to create an instance of a Function object?
funct = new.Function() funct = new.Function funct = Function(new) funct == Function funct = new Function()
ANS: funct = new Function()
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Sample Code <SCRIPT LANGUAGE="JavaScript"> <!-- var i, j; iloop: for (i = 0; i < 5; i++) { jloop: for (j = 0; j < 10; j++) { if (j > 4) break iloop; if (j > 3) break jloop; } } // --> </SCRIPT>
What are the values of i and j after execution of the above code?
i = 4, j = 4
i = 4, j = 3
i = 5, j = 4
i = 5, j = 3
i = 5, j = 5 ANS: i = 5, j = 4
Sample Code var x; x = 5 * 5 * 5 * 5 * 5;
Which one of the following is equivalent to the code above?
x = 5 + 5 + 5 + 5 + 5;
x = 5 ^ 5;
x = 5.toPower(5);
x = Math.pow(5,5);
x = Math.toPower(5,5); ANS: x = Math.pow(5,5);
Which one of the following code samples changes the method of TestForm to "GET"?
document.TestForm.method = "GET";
document.TestForm.onsubmit = "GET";
document.TestForm.method("GET");
document.TestForm.onsubmit("GET");
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document.TestForm.setMethod("GET");
ANS: document.TestForm.method = "GET";
Sample Code function openWindow(x, y, z) { window.open(x, y, z); }
When called, the above function opens a new window with which of the following?
A URL of "y," a title of "z," and features of "x."
A URL of "x," a title of "y," and features of "z."
A URL of "y," a title of "x," and features of "z."
A URL of "z," a title of "y," and features of "x."
A URL of "x," a title of "z," and features of "y."
ANS: A URL of "x," a title of "y," and features of "z."
•
Sample Code <SCRIPT LANGUAGE="JavaScript"> <!-- function goTo(url){ document.location.href = url; } // --> </SCRIPT> <FORM> <INPUT TYPE="button" onClick="goTo('link1.html'); return true;"> <INPUT TYPE="button" onClick="goTo('link2.html'); return true;"> <INPUT TYPE="button" onClick="goTo('link3.html'); return true;"> <INPUT TYPE="button" onClick="goTo('link4.html'); return true;"> <INPUT TYPE="button" onClick="goTo('link5.html'); return true;"> </FORM>
What does the above code create?
Five checkboxes and a button that loads the selected document when clicked
Five hyperlinks
A pull-down menu and a button that loads the selected document when clicked
Five buttons, each loading a corresponding URL when clicked
Five radio buttons and a button that loads the selected document when clicked ANS: Five buttons, each loading a corresponding URL when clicked
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Sample Code
<SCRIPT LANGUAGE="JavaScript"> <!-- var a = 2, b = -3, c = 5; var x = 1; if ((a + b) > c) x += 1; if (a > (b + c)) x += 1; if ((b > c) && (c > a)) x += 1; if ((c > a) || (b > c)) x += 1; // --> </SCRIPT>
What is the value of x after the above script is run?
1
2
3
4
5
ANS:2
Sample Code var newWindow = open(url, title, args);
To which one of the following does newWindow.opener refer in the above code?
newWindow itself
The window that opened newWindow
The URL with which newWindow is opened
The top window
The navigator object ANS: The window that opened newWindow
The opener property returns a reference to the window that created the window
The referrer property returns the URL of the document that loaded the current document
The items in which one of the following pairs do the same thing?
history.go( history.length) and history.go(0)
history.forward() and history.go()
history.go(-2) and history.back()
history.back() and history.go(-1)
history.forward(1) and history.go(0)
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ANS: history.back() and history.go(-1)
Which one of the following is true of local variables?
They are always in scope.
They are declared using the "var" command.
They are not accessible to sub-blocks.
They are only referenced inside the block in which they are declared.
They are accessible throughout the JavaScript code. ANS: They are only referenced inside the block in which they are declared.
Output One, Two..
What code produces the above output?
document.write("One,\nTwo..\n");
document.write('One,\nTwo..\n');
document.write('<PRE>One,\nTwo..\n</PRE>');
document.writeln("One,'); document.writeln('Two ');
<PRE>document.writeln('One,');document.write('Two ');<PRE> ANS: document.write('<PRE>One,\nTwo..\n</PRE>');
Code txt = new String("Sample text."); function textColor() { return "<FONT color='" + this.color + "'>" + this + "</FONT>"; }
Using the code above, what code assigns a "color" property to all string objects defaulted "gray" and facilitates printing colored text to a browser?
String.color = "gray"; String.colored = textColor;
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color.String = "gray"
String.txt.color = "gray"
String.color = "gray"
String.prototype.color = "gray"; String.prototype.colored = textColor; ANS: String.prototype.color = "gray"; String.prototype.colored = textColor;
Code function calc(form,fld) { var d = 0; if(fld == "r") { if(form.s.checked) { d=Math.sqrt(form.r.value); } else { d=form.r.value/2; } } else { if (form.s.checked) { d = form.e.value * form.e.value; } else { d = form.e.value * 2; } } return d; }
Referring to the above code, if checkbox "s" is checked, and parameter "fld" is equal to "q," what does function calc return?
"e" squared
"r" * 2
null
"r"/ 2
square root of "e" ANS: "e" squared
Q:<SCRIPT LANGUAGE="JavaScript"> <!-- var x; x = 1; <CODE HERE> // --> </SCRIPT>
Referring to the above, which one of the following code fragments will output the value of x?
window.output(x);
document.output(x);
window.writeln(x);
window.document.writeln(x);
String.output(x); ANS: window.document.writeln(x);
52
Q:
<FORM METHOD="GET" onSubmit="return checkText(this);"> <INPUT TYPE="text" NAME="textObject"> <INPUT TYPE="submit" VALUE="Submit"> </FORM>
In the above code, to which one of the following does "this" refer?
document
textObject
checkText
form
window
ANS:FORM
Q:
i=0; total=0; while(i<4) { i++; if(i > 2) break; total += i; }
What is the value of "total" after execution of the code above?
0
1
2
3
6 ANS:3
53
Q:If you wanted to put "Hello There!" on the status line, which one of the following code fragments does that?
self.status = "Hello There!"; return true;
self.status.value = "Hello There!"; return true;
self.document.status.setValue("Hello There!"); return true;
self.status.setValue("Hello There!"); return true;
self.setStatus("Hello There!"); return true; ANS: self.status = "Hello There!"; return true;
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1. 'url to open' This is the web address of the page you wish to appear in the new window.
2. 'window name' You can name your window whatever you like, in case you need to make a reference to the window later.
3. 'attribute1,attribute2' As with alot of other things, you have a choice of attributes you can adjust.
Window Attributes
Below is a list of the attributes you can use:
1. width=300 Use this to define the width of the new window.
2. height=200 Use this to define the height of the new window.
3. resizable=yes or no Use this to control whether or not you want the user to be able to resize the window.
4. scrollbars=yes or no This lets you decide whether or not to have scrollbars on the window.
5. toolbar=yes or no Whether or not the new window should have the browser navigation bar at the top (The back, foward, stop buttons..etc.).
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6. location=yes or no Whether or not you wish to show the location box with the current url (The place to type http://address).
7. directories=yes or no Whether or not the window should show the extra buttons. (what's cool, personal buttons, etc...).
8. status=yes or no Whether or not to show the window status bar at the bottom of the window.
9. menubar=yes or no Whether or not to show the menus at the top of the window (File, Edit, etc...).
10. copyhistory=yes or no Whether or not to copy the old browser window's history list to the new window.
Q:<a href="map.htm" onMouseOver="window.status='Click for help!';">Site Map</a>
Which one of the following is true of the above code?
It opens a new status window with document text "Click for Help!"
It creates a hyperlink that says "Click for Help!"
Most browsers will interpret this as a syntax error.
It displays a help message in the status bar when mouse is over the hyperlink.
It does nothing because the JavaScript language is not specified.
ANS: It displays a help message in the status bar when mouse is over the hyperlink.
Which event handler or handlers are used to track a user's moves between fields in an HTML form?
56
onFocus and onBlur onChange focus and blur load and unload onLoad and onUnload ANS: onFocus and onBlur Q:To delete an element from an array of Option objects attached to a DOM Select object, you set its reference equal to which one of the following? -1 null 0 NaN false
ANS; null
Q:var x; var y; x = new Array(3); x[0] = 1; x[1] = 2; x[2] = 3;
57
y = new Array(3); y[0] = 1; y[1] = 2; y[2] = 3;
Referring to the above, which one of the following is true? x.toString() == y.toString() x.equals(y) x == y x equals y None of the above ANS: x.toString() == y.toString()
Which one of the following is a DRAWBACK of JavaScript? It cannot be copy-protected. It does not work with Html forms. It is platform independent. It only works with Netscape browsers. It does not work with CGI. ANS: It cannot be copy-protected. Q:var index = 0; do { index++; document.writeln(index);
58
} while (index < 10); Which one of the following code segments is equivalent to the code above?
1. var index = 1; do { document.writeln(++index); } while (index <= 10);
2. for (var index = 1; index <= 10; index++) document.writeln(index);
3. for (var index = 0; index < 10; index++)
document.writeln(index);
4. var index = 0; do { document.writeln(++index); } while (index <= 10);
5. var index = 0; do { document.writeln(index++); } while (index < 10);
6. ANS: for (var index = 1; index <= 10; index++) document.writeln(index);
Q:<A HREF="#" onMouseOver="status='Example';">test</a> Referring to the above code, when the "onMouseOver" event fires, the status line displays which one of the following? The word "test"
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The "#" symbol The current document URL with a "#" after it The current document URL with "Example" after it The word "Example" ANS: The current document URL with a "#" after it Example
All Objects
4 OBJECT: Textarea
A Textarea object provides a multi-line field in which the user can enter data and is created with every instance of an HTML <TEXTAREA> tag on a form. These objects are then stored in the elements array of the parent form and accessed using either the name defined within the HTML tag or an integer (with '0' being the first element defined, in source order, in the specified form). PROPERTIES defaultValue Property This property sets or returns a string indicating the initial value of the Textarea object. The value of this property initially reflects the value between the start and end <TEXTAREA> tags. Use of the defaultValue property, which can be done at any time, will override the original value. Syntax: object.defaultValue[ = "newdefaultvalue"] form Property This property returns a reference to the parent Form of the Textarea object.
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Syntax: object.form name Property This property sets or returns the value of the Textarea object's name attribute. Syntax: object.name type Property Every element on a form has an associated type property. In the case of a Textarea object, the value of this property is always "textarea". Syntax: object.type value Property This property sets or returns the Textarea object's value attribute. This is the text that is actually displayed in the Textarea and can be set at any time with any changes being immediately displayed. Syntax: object.value METHODS blur Method This method removes the focus from the specified Textarea object. Syntax: object.blur( ) focus Method This method gives focus to the specified Textarea object. Syntax: object.focus( ) handleEvent Method This method calls the handler for the specified event. Syntax: object.handleEvent(event) select Method This method is used to select and highlight all or a portion of a text in a Textarea element. Used in conjunction with the focus method, this makes it easy to prompt the user for input and places the cursor in the correct place. Syntax: object.select( ) EVENT HANDLERS onBlur Event handler This event handler executes some specified JavaScript code on the occurrence of a blur event (when the Textarea object loses focus).
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Syntax: object.onBlur="myJavaScriptCode" onChange Event handler This event handler executes some specified JavaScript code on the occurrence of a change event (when the Textarea object loses focus and its value has altered). Syntax: object.onChange="myJavaScriptCode" onFocus Event handler This event handler executes some specified JavaScript code on the occurrence of a focus event (when the Textarea object receives focus). Syntax: object.onFocus="myJavaScriptCode" onKeyDown Event handler This event handler executes some specified JavaScript code on the occurrence of a KeyDown event (when a key is depressed). Syntax: object.onKeyDown="myJavaScriptCode" onKeyPress Event handler This event handler executes some specified JavaScript code on the occurrence of a KeyPress event (when a key is depressed and held down). Syntax: object.onKeyPress="myJavaScriptCode" onKeyUp Event handler This event handler executes some specified JavaScript code on the occurrence of a KeyUp event (when a key is released). Syntax: object.onKeyUp="myJavaScriptCode" onSelect Event handler This event handler executes some specified JavaScript code on the occurrence of a select event (when some text in the Textarea is selected). Syntax: object.onSelect="myJavaScriptCode"
someText = 'JavaScript1.2'; pattern = /(\w+)(\d)\.(\d)/i; outCome = pattern.exec(someText); Referring to the above code, after execution, what does outCome[0] contain?
62
true false /(\w+)(\d)\.(\d)/I undefined JavaScript1.2 ANS: JavaScript1.2
Which one of the following is NOT a property of the password object? defaultValue Type Length Name Value ANS: Length Password has a property caleed maxLength and not length.
Q:function setBanner() { if(document.images) { bannerImg = new Image; bannerImg.src = 'bluebanner.gif'; return (bannerImg.src); } return(""); } Referring to the above code, when does the script reach the line return("")?
63
When document.images != null When the browser does not recognize the images object When the browser is not javascript-enabled When setBanner() is called When all the code above has executed
ANS: When the browser does not recognize the images object
Q:Which one of the following properties is the same as document.location.href? document.href top.link.href document.URL document.link.href window.document.href
ANS: document.URL
Q:FORM METHOD="GET" ACTION="/cgi-bin/process.pl"> <INPUT TYPE="submit" onClick="processClick(); return false;" onSubmit="processSubmit(); return true;"> </FORM>
In the above code, if the submit button is pressed, what code executes? None processSubmit() function
64
processClick() function Both processSubmit() and processClick() functions An error occurs. ANS processClick() function
Q:Sample Code <SCRIPT LANGUAGE="JavaScript"> <!-- function functionCall(f){ top.document.title = f.TestSelect.options[f.TestSelect.selectedIndex].value; } // --> </SCRIPT> <FORM> <SELECT NAME="TestSelect" onChange="functionCall(this.form);"> <OPTION VALUE="This is option 1">Option 1</OPTION> <OPTION VALUE="This is option 2">Option 2</OPTION> <OPTION VALUE="This is option 3">Option 3</OPTION> </SELECT> </FORM> What does the above script do in Internet Explorer? It changes the title of the top level document to the value of the selected option. It changes the title of the document in all open browser windows. It outputs the selected title to the document's window. It changes the selected index to the value of the selected option. It changes the title of the document in the current frame. Ans: It changes the title of the top level document to the value of the selected option
65
How can you get the width of the user's screen in JavaScript? self.getWidth() self.width self.screen.width self.document.getWidth() self.get("width") ANS:Self.width
self.screen.width
Sample Code function test(x, y) { return (Math.sqrt(x*x + y*y)); } function test2(x, y) { return (x ^ y); } document.writeln(test2(test(3,4),3));
What does the above code print?
2
4
6
25
125 ANSWER:6
Code var x=0; var y=0; var z=0; x = 1; x = (-x + y++) * ++z;
What is the value of "x" after execution of the code above?
-2
-1
0
1
2
66
ANSWER:-1
Q:For which one of the following is the default keyword used?
To create a default function
To import the default style for the document
To execute the default code in a switch statement
To specify a default document if an href is incorrect
To use the default JavaScript files for the site ANSWER: To execute the default code in a switch statement
Sample Code <HEAD> <SCRIPT LANGUAGE="JavaScript"> <!-- self.onerror = function() { self.document.location = "/errorpage.html"; return true; } // --> </SCRIPT> </HEAD>
What does the above code do?
It loads up errorpage.html when the page with this script is first loaded. If there is an error in the document, it loads up errorpage.html. It creates an error because the window object does not have an onerror
property.
If there is an error in any window, it loads up errorpage.html. It creates an error because the self object does not have an onerror
property.
ANSWER: If there is an error in the document, it loads up errorpage.html.
Code var sample = "test"; sample.big().blink().bold().strike(); sample=sample.fontsize(7); document.write(sample.italics());
Referring to the above code, the document shows the word "test" with what style characteristics?
Size 7, blinking, bold, strikethrough, and italic
Size 7 and italic only
67
Italic only
Blinking, bold, strikethrough, size 8, and italic
Default for the document ANSWER: Size 7 and italic only
Sample Code var season; /* code segment */ switch (season) { case 1: document.writeln("Winter"); break; case 2: document.writeln("Spring"); break; case 3: document.writeln("Summer"); break; case 4: document.writeln("Autumn"); }
Which one of the following code segments always will output "Summer" in the code above?
season = 4;
season = Math.ceil(Math.random() * 4);
season = "Winter";
season = Math.ceil(Math.random()) * 3;
season = "Summer"; ANSWER: season = Math.ceil(Math.random()) * 3;
var test = "Navigator"; test=test.substring(3,0);
Referring to the above code, what is the value of "test" after execution?
Nav
Naviga
iga
tor
igator ANSWER: NAV
Q:<FORM><INPUT TYPE=text name="first" onChange="echo(this.form,this.name);"> <INPUT TYPE=text name="second" onChange="echo(this.form,this.name);"> </FORM><SCRIPT language=javascript>
68
function echo(form,currentfield) { if(currentfield == "first") form.second.value=form.first.value; else form.first.value=form.second.value; } </SCRIPT>
Function echo() above does which one of the following?
It copies the text from the second field to the first.
It moves the text from the second field to the first.
It moves the text from the first field to the second.
It swaps the text entered between fields.
It copies the text from the first field to the second. ANSWER: It copies the text from the first field to the second. It swaps the text entered between fields
What does the referrer property of the document object contain?
The history object
The URL that linked to the current document
The current URL
The URL in the URL line in the browser
The name of the window that opened the document
ANSWER: The URL that linked to the current document
What does the value of a reset button contain?
The button object
The button label
The button type
The reset property
The button name The button label
69
JavaScript Features A can not directly access client computer resources
B can not collect or give out passwords
C can not access other computers remotely
D uses 40 bit encryption
Referring to the above code, JavaScript security is enhanced because of which one of the following pairs?
A and B
B and C
C and D
A and C
B and D
ANS: A and C
What properties contain the name and version of the browser in use?
document.cookie
navigator.appName and navigator.appVersion
document.host and document.hostVersion
browser.name and browser.version
This information is not readily available.
ANS: navigator.appName and navigator.appVersion
Code <A HREF="#" onMouseOver="status='Example';">test</a>
Referring to the above code, when the "onMouseOver" event fires, the status line displays which one of the following?
The word "test"
The current document URL with "Example" after it
The current document URL with a "#" after it
The word "Example"
The "#" symbol
ANS:
The current document URL with a "#" after it The word "Example"
70
The alert method belongs to which object?
location
document
window
It does not belong to any object.
input
ANS: window
Code function wContent(thisPage) { parent.content.document.write("<BODY>"); parent.content.document.write("Page "+ thisPage+"."); parent.content.document.close(); }
Referring to the above code, what code writes content into the main window?
<A HREF="javascript:wContent(1)">Page1</A>
<A HREF="wContent(1)">Page1</A>
<A HREF="document.wContent(Page1)">Page1</A>
<A HREF="parent.document.wContent(Page1)">Page1</A>
<A HREF="parent.wContent(1)">Page1</A>
ANS: Don’t know <A HREF="javascript:wContent(1)">Page1</A>
num = 0; while(num<10) { num++; }
How many times does the above "while" loop iterate?
9
10
At least 9
At least 10
71
It is impossible to tell. ANS: 10
What statement is used to declare an integer named cnt?
Variable cnt;
Integer cnt;
Number cnt;
var cnt;
int cnt;
ANS: var cnt;
Sample Code testText = "This is"; testMessage = testText + " " + new Number(4) + " pages long!";
What is contained in testMessage after the above code segment is executed?
"This is Number:4 pages long!"
"This is (4) pages long!"
"This is 4 pages long!"
An error will occur because a number is added with a String.
"This is Number(4) pages long!"
ANS: "This is 4 pages long!"
Sample Code document.form[0].action = "cgi-bin/process.cgi";
What does the above code segment do?
It submits the first form.
It changes the script that processes the first form's results.
It changes the first form's method of submitting.
It changes the first form's display within the browser.
It changes the order in which the forms are processed.
72
ANS: It changes the script that processes the first form's results.
It changes the first form's method of submitting.
The event method "setTimeout(code, time)" is a method belonging to which one of the following objects?
location
document
window
It does not belong to any object.
form
ANS: window
Which property of a frame is referenced by a link's target property?
parent
href
self
location
name
ANS: href
name
Which definition of the event handler for "onreset" for a form named "TestForm" is correct?
document.TestForm.onreset.function = { /* code here */ };
document.TestForm.onreset(function() { /* code here */ });
document.TestForm.onreset(new Function({ /* code here */ }));
document.TestForm.onreset.function = new Function({ /* code here */ });
document.TestForm.onreset = function() { /* code here */ };
ANS: document.TestForm.onreset = function() { /* code here */ };
73
Which property is used to access the number of elements in a form?
elements
method
length
number
count
ANS: length
JavaScript's built-in client-side objects provide which one of the following? Multiple levels of abstraction Access to parts of the loaded HTML document A procedural interface for BASIC programmers Access to machine-specific system parameters Multi-threaded applications ANS: Access to parts of the loaded HTML document
Sample Code <SCRIPT LANGUAGE="JavaScript"> <!-- var first = true, second = false; if (first && second) /* code segment 1 */ else if (first || second) /* code segment 2 */
74
else if (second && first) /* code segment 3 */ else if (second || first) /* code segment 4 */ else /* code segment 5 */ // --> </SCRIPT> Which of the above code segments gets executed? Code segment 1 Code segment 2 Code segment 3 Code segment 4 Code segment 5 ANS: 2
Sample Code top.frames[1].location.href = "test.html"; What does the above code segment do? It loads the first frame from the top window with 'test.html'. It loads the second frame from the current window with 'test.html'. It loads the second frame from the top window with 'test.html'. It prepares the 'test.html' document for loading. It loads the first frame from the current window with 'test.html'. ANS: It loads the second frame from the top window with 'test.html'.
var w = 0; var x = new Object(); var y = "String";
75
var z = 4; if ((typeof x == "object") && (x.constructor == Object)) w += 1; if ((typeof y == "object") && (y.constructor == String)) w += 2; if ((typeof z == "object") && (z.constructor == Number)) w += 4; Referring to the above, what is the value of w? 0 1 2 3 4 ANS: w=1
How do you refer to the first form in the first frame if your script is in the second frame? self.frames[0].form[0] parent.frames[0].form[0] self.frames[1].form[1] top.frames[1].form[1] parent.frames[1].form[1]
76
ANS: parent.frames[0].form[0]
Which one of the following is true of the "+" operator when applied to strings. It concatenates the strings into a new string object. It is invalid and produces an error. It sums the binary equivalent of the characters from both strings. It modifies the first string to include the second string. It adds the lengths of the two strings.
ANS: It concatenates the strings into a new string object.
appCodeName The code name of the browser.
appName The name of the browser (ie: Microsoft Internet Explorer).
appVersion Version information for the browser (ie: 4.75 [en] (Win98; U)).
cookieEnabled Boolean that indicates whether the browser has cookies enabled.
language Returns the default language of the browser version (ie: en-US). NS and Firefox only.
mimeTypes[] An array of all MIME types supported by the client. NS and Firefox only.
platform[] The platform of the client's computer (ie: Win32).
plugins An array of all plug-ins currently installed on the client. NS and Firefox only.
systemLanguage Returns the default language of the operating system (ie: en-us). IE only.
userAgent String passed by browser as user-agent header. (ie: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1))
userLanguage Returns the preferred language setting of the user (ie: en-ca). IE only.
77
Code a. var length = parseInt('8'); b. var length = '8'; c. length = 1 + '8'; d. length = 8;
Referring to the above code, which lines declare variable "length" with a number data type?
a and b
b and c
c and d
a and d
b and d ANS: a and b
<FORMaction="someAction " method="POST" name="TestForm"> <SELECT name="TestSelect" MULTIPLE > <OPTION selected>Option 1</OPTION> <OPTION>Option 2</OPTION> <OPTION>Option 3</OPTION> <OPTION selected>Option 4</OPTION> <OPTION>Option 5</OPTION> </SELECT> </FORM>
Given the above, what is the value of document.TestForm.TestSelect.length?
1
78
2
3
4
5
ANS: 5
How do you create a new DOM cookie?
Clone another cookie.
Call document.newCookie().
Assign values to the document.cookie property.
Reset the expiration date on an existing cookie.
Call newCookie(). ANS: Assign values to the document.cookie property.
Sample Code <FORM METHOD="GET" ACTION="http://somewhere.on.net"> <INPUT TYPE="submit" onClick="history.go(-3); return false;"> </FORM>
Where does clicking the submit button in the above code take you?
"somewhere.on.net" main page
"somewhere.on.net" main page, then back three pages
Back three pages
Back three pages, then to the "somewhere.on.net" main page
It will give a JavaScript error. ANS: Back three pages
Which one of the following is NOT a JavaScript method used to emulate an event?
submit()
select()
load()
79
focus()
click() ANS: submit() ??
Code <FORM> <INPUT type=button name=Reload value=Reload onClick="loadOver();"> </FORM><SCRIPT language=javascript> function loadOver() { code here } </SCRIPT>
Referring to the above code, what statement inside function loadOver() causes button "Reload" to emulate the Refresh button of a browser?
parent.ctr.location="javascript:location.reload()"
self.counter.location="location.history(0)"
location.reload()
document.location.href = this
parent.history(0) ANS: location.reload()
Sample Code var x = 1; x = new Function("x", "y", "return 4;");
What is the value of x.length after executing the above code segment?
0
1
2
3
4 ANS: 2
What do server-side session objects generally use on the client side to keep track of the user's session?
document.referrer document.session
80
The history object. cookies The window object.
ANS: cookies
Cookies and Sessions - Session variables are maintained as cookies on the client so the client browser must have cookies enabled in order for the server to maintain session variables, otherwise the server sees every access by the same client as a new session when cookies are disabled. The server script can test whether session state is being maintained (i.e. cookies enabled) by:
1. setting a session variable, 2. immediately invoke another ASP that tests if the session variable is
still defined, 3. if not defined then most likely the browser isn't accepting cookies.
What code captures the user's name, or "Name," if the user clicks OK WITHOUT entering a name?
alert("Hello, " + confirm("Enter Your Name:"))
alert("Hello, " + alert("Enter Your Name:"))
alert("Hello, " + prompt("Enter Your Name:","Name") + ".")
prompt("Hello, " + prompt("Enter Your Name:","Name") ".")
alert("Hello, ") + prompt("Enter Your Name:") ANS: alert("Hello, " + prompt("Enter Your Name:","Name") + ".")
document.write('<IMG SRC="t.gif">'); document.writeln("<BR><PRE>Test"); document.write("JS!</PRE>");
Which one of the following is equivalent to the above code?
document.writeln(<IMG SRC="t.gif">Test\nJS!)
document.write('<IMG SRC="t.gif"><BR>Test\nJS!')
document.writeln('<IMG SRC="t.gif">')<BR><PRE>Test\nJS!</PRE>
document.write('<IMG SRC="t.gif"><BR><PRE>Test\nJS! </PRE>')
81
document.write("<IMG SRC="t.gif">Test\nJS!")
ANS:
document.write('<IMG SRC="t.gif"><BR><PRE>Test\nJS! </PRE>')
Which one of the following is the form object's only method?
send()
submit()
click()
focus()
select()
ANS: submit()
What code always brings window "newWindow" to the front?
newWindow.position(top)
newWindow.focus()
setPosition.newWindow.top
newWindow.Visibility(top)
onFocus.newWindow.show
ANS: newWindow.focus()
Other than a checkbox, which other form element has a "checked" property?
hidden
select
input
option
radio
ANS: radio
Code <script language=javaScript>
82
function surfto(form) { var idx=form.s1.selectedIndex if(form.s1.options[idx].value != 0) location=form.s1.options[idx].value; } </SCRIPT><FORM name="form1"> <SELECT name=s1 onChange="surfto(this.form)" size=1> <OPTION selected value=0>Choose One <OPTION value=u2.htm>U2 <OPTION value=u3.htm>U3 <OPTION value=u4.htm>U4</SELECT> </FORM>
Which one of the following does the above code create?
Four hyperlinks
Four buttons, each loading a corresponding URL when clicked
Four check boxes and a button that loads the selected document when clicked
A pull-down menu and a button that loads the selected document when clicked
A pull-down menu with four choices that loads a selected when focus is removed
When the following code is executed in Netscape: x = new Java.lang.Double(2.05); what type of object is x?
Double
var ans
JavaObject
Number
Float JavaObject
var x = 15%4;
Referring to the above code, what is the value of variable "x"?
0
1
2
3 ans
4
Which one of the following objects is NOT a form element?
83
password
input
link
select
hidden
Ans :link
Sample Code var x; x = Array(2,5,10);
Referring to the above, how many elements are in the array x?
3
4
10
11
100
Ans :3
Code <form name=f1> <input type="text" name="a"> <input type="text" name="b"> </form>
Referring to the above code, what code initially places the cursor in text field "a"?
<HEAD onLoad="this.document.f1.focus();">
<BODY Select="document.f1.a.select();">
<BODY onChange="this.document.f1.select();">
<BODY onLoad="this.document.f1.a.focus();">
<HEAD setFocus="document.f1.a.focus();">
84
Ans: <BODY onLoad="this.document.f1.a.focus();">
delete car.fivespeed;
The above code deletes which one of the following?
The car class
The fivespeed property from the car class
The fivespeed property from object car
Object car
Nothing Ans The fivespeed property from object car
function Pass() { document.jane.elements[0].value= document.joe.elements[0].value; } <FORM name=joe> <INPUT type=text size=30></FORM> <FORM><INPUT type=button value="Click Me" onClick="Pass()"></FORM> <FORM name=jane> <INPUT type=text size=30></FORM>
Q Referring to the above code, what happens to the text when the user types "Hello" into the first text control and then clicks the button?
Nothing, function "Pass()" contains an error.
It is moved to the second text control.
It is left in the first text control.
It is deleted from the first text control.
It is copied to the second text control.
Ans: It is copied to the second text control.
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