w3 Specification

8/8/2019 w3 Specification

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W3C STANDARDS MAINTAINING BY JKTECHNOSOFT

What are the W3C and web standards?

W3C stands for World Wide Web consortium and the W3C was formed in October 1994by Tim Berners-lee the inventor of the World Wide Web. The W3C oversees internetdevelopment and tries to bring standards and best practices when designing for theinternet.

They govern standards for many things includingHTML,CSS and XML.

HTML SPECIFICATION:

HTML Attributes:

Standard Attributes

Core Attributes

Not valid in base, head, html, meta, param, script, style, and title elements.

Attribute Value Description

class classname Specifies a classname for an element

id id Specifies a unique id for an element

style style_definition Specifies an inline style for an element

title text Specifies extra information about an element

Language Attributes

Not valid in base, br, frame, frameset, hr, iframe, param, and script elements.


Dirltrrtl

Specifies the text direction for the content in anelement

Lang language_codeSpecifies a language code for the content in anelement. Language code reference

xml:lang language_codeSpecifies a language code for the content in anelement, in XHTML documents. Language codereference
http://www.moovinonup.com/tim_berners_lee.htmlhttp://www.moovinonup.com/seo-glossary-h.htmlhttp://www.moovinonup.com/seo-glossary-h.htmlhttp://www.moovinonup.com/seo-glossary-c.htmlhttp://www.moovinonup.com/seo-glossary-c.htmlhttp://www.w3schools.com/tags/att_standard_class.asphttp://www.w3schools.com/tags/att_standard_id.asphttp://www.w3schools.com/tags/att_standard_style.asphttp://www.w3schools.com/tags/att_standard_title.asphttp://www.w3schools.com/tags/ref_language_codes.asphttp://www.w3schools.com/tags/ref_language_codes.asphttp://www.w3schools.com/tags/ref_language_codes.asphttp://www.moovinonup.com/tim_berners_lee.htmlhttp://www.moovinonup.com/seo-glossary-h.htmlhttp://www.moovinonup.com/seo-glossary-c.htmlhttp://www.w3schools.com/tags/att_standard_class.asphttp://www.w3schools.com/tags/att_standard_id.asphttp://www.w3schools.com/tags/att_standard_style.asphttp://www.w3schools.com/tags/att_standard_title.asphttp://www.w3schools.com/tags/ref_language_codes.asphttp://www.w3schools.com/tags/ref_language_codes.asphttp://www.w3schools.com/tags/ref_language_codes.asp


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Keyboard Attributes


Accesskey character Specifies a keyboard shortcut to access an element

tabindex number Specifies the tab order of an element

Standard Event Attributes

HTML 4 added the ability to let events trigger actions in a browser, like starting aJavaScript when a user clicks on an element.

To learn more about programming events, please visit ourJavaScript tutorial and ourDHTML tutorial.

Below is the standard event attributes that can be inserted into HTML / XHTMLelements to define event actions.

and Events

The two attributes below can only be used in or :


onload script Script to be run when a document load

onunload script Script to be run when a document unload

Form Events

The attributes below can be used in form elements:


onblur script Script to be run when an element loses focus

onchange script Script to be run when an element change

onfocus script Script to be run when an element gets focus

onreset script Script to be run when a form is reset

onselect script Script to be run when an element is selectedonsubmit script Script to be run when a form is submitted

Image Events

The attribute below can be used with the img element:
http://www.w3schools.com/js/default.asphttp://www.w3schools.com/dhtml/default.asphttp://www.w3schools.com/js/default.asphttp://www.w3schools.com/dhtml/default.asp


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onabort scriptScript to be run when loading of an image isinterrupted

Keyboard Events

Valid in all elements except base, bdo, br, frame, frameset, head, html, iframe, meta,param, script, style, and title.


onkeydown script Script to be run when a key is pressed

onkeypress script Script to be run when a key is pressed and released

onkeyup script Script to be run when a key is released

Mouse Events

Valid in all elements except base, bdo, br, frame, frameset, head, html, iframe, meta,param, script, style, and title.


onclick script Script to be run on a mouse click

ondblclick script Script to be run on a mouse double-click

onmousedown script Script to be run when mouse button is pressed

onmousemove script Script to be run when mouse pointer moves

onmouseout scriptScript to be run when mouse pointer moves out of anelement

onmouseover scriptScript to be run when mouse pointer moves over anelement

onmouseup script Script to be run when mouse button is released

HTML Tags
http://www.w3schools.com/tags/tag_comment.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/tag_a.asphttp://www.w3schools.com/tags/tag_font_style.asphttp://www.w3schools.com/tags/tag_comment.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/tag_a.asphttp://www.w3schools.com/tags/tag_font_style.asp


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-
http://www.w3schools.com/tags/tag_base.asphttp://www.w3schools.com/tags/tag_body.asphttp://www.w3schools.com/tags/tag_br.asphttp://www.w3schools.com/tags/tag_button.asphttp://www.w3schools.com/tags/tag_caption.asphttp://www.w3schools.com/tags/tag_center.asphttp://www.w3schools.com/tags/tag_phrase_elements.asphttp://www.w3schools.com/tags/tag_phrase_elements.asphttp://www.w3schools.com/tags/tag_col.asphttp://www.w3schools.com/tags/tag_colgroup.asphttp://www.w3schools.com/tags/tag_dd.asphttp://www.w3schools.com/tags/tag_dir.asphttp://www.w3schools.com/tags/tag_div.asphttp://www.w3schools.com/tags/tag_dl.asphttp://www.w3schools.com/tags/tag_dt.asphttp://www.w3schools.com/tags/tag_phrase_elements.asphttp://www.w3schools.com/tags/tag_fieldset.asphttp://www.w3schools.com/tags/tag_font.asphttp://www.w3schools.com/tags/tag_form.asphttp://www.w3schools.com/tags/tag_frame.asphttp://www.w3schools.com/tags/tag_frameset.asphttp://www.w3schools.com/tags/tag_head.asphttp://www.w3schools.com/tags/tag_hn.asphttp://www.w3schools.com/tags/tag_hr.asphttp://www.w3schools.com/tags/tag_html.asphttp://www.w3schools.com/tags/tag_iframe.asphttp://www.w3schools.com/tags/tag_img.asphttp://www.w3schools.com/tags/tag_input.asphttp://www.w3schools.com/tags/tag_label.asphttp://www.w3schools.com/tags/tag_li.asphttp://www.w3schools.com/tags/tag_link.asphttp://www.w3schools.com/tags/tag_map.asphttp://www.w3schools.com/tags/tag_menu.asphttp://www.w3schools.com/tags/tag_meta.asphttp://www.w3schools.com/tags/tag_ol.asphttp://www.w3schools.com/tags/tag_optgroup.asphttp://www.w3schools.com/tags/tag_option.asphttp://www.w3schools.com/tags/tag_p.asphttp://www.w3schools.com/tags/tag_param.asphttp://www.w3schools.com/tags/tag_pre.asphttp://www.w3schools.com/tags/tag_script.asphttp://www.w3schools.com/tags/tag_select.asphttp://www.w3schools.com/tags/tag_font_style.asphttp://www.w3schools.com/tags/tag_span.asphttp://www.w3schools.com/tags/tag_style.asphttp://www.w3schools.com/tags/tag_table.asphttp://www.w3schools.com/tags/tag_base.asphttp://www.w3schools.com/tags/tag_body.asphttp://www.w3schools.com/tags/tag_br.asphttp://www.w3schools.com/tags/tag_button.asphttp://www.w3schools.com/tags/tag_caption.asphttp://www.w3schools.com/tags/tag_center.asphttp://www.w3schools.com/tags/tag_phrase_elements.asphttp://www.w3schools.com/tags/tag_phrase_elements.asphttp://www.w3schools.com/tags/tag_col.asphttp://www.w3schools.com/tags/tag_colgroup.asphttp://www.w3schools.com/tags/tag_dd.asphttp://www.w3schools.com/tags/tag_dir.asphttp://www.w3schools.com/tags/tag_div.asphttp://www.w3schools.com/tags/tag_dl.asphttp://www.w3schools.com/tags/tag_dt.asphttp://www.w3schools.com/tags/tag_phrase_elements.asphttp://www.w3schools.com/tags/tag_fieldset.asphttp://www.w3schools.com/tags/tag_font.asphttp://www.w3schools.com/tags/tag_form.asphttp://www.w3schools.com/tags/tag_frame.asphttp://www.w3schools.com/tags/tag_frameset.asphttp://www.w3schools.com/tags/tag_head.asphttp://www.w3schools.com/tags/tag_hn.asphttp://www.w3schools.com/tags/tag_hr.asphttp://www.w3schools.com/tags/tag_html.asphttp://www.w3schools.com/tags/tag_iframe.asphttp://www.w3schools.com/tags/tag_img.asphttp://www.w3schools.com/tags/tag_input.asphttp://www.w3schools.com/tags/tag_label.asphttp://www.w3schools.com/tags/tag_li.asphttp://www.w3schools.com/tags/tag_link.asphttp://www.w3schools.com/tags/tag_map.asphttp://www.w3schools.com/tags/tag_menu.asphttp://www.w3schools.com/tags/tag_meta.asphttp://www.w3schools.com/tags/tag_ol.asphttp://www.w3schools.com/tags/tag_optgroup.asphttp://www.w3schools.com/tags/tag_option.asphttp://www.w3schools.com/tags/tag_p.asphttp://www.w3schools.com/tags/tag_param.asphttp://www.w3schools.com/tags/tag_pre.asphttp://www.w3schools.com/tags/tag_script.asphttp://www.w3schools.com/tags/tag_select.asphttp://www.w3schools.com/tags/tag_font_style.asphttp://www.w3schools.com/tags/tag_span.asphttp://www.w3schools.com/tags/tag_style.asphttp://www.w3schools.com/tags/tag_table.asp


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HTML Declaration

Definition: The doctype declaration should be the very first thing in an HTML

document, before the tag.

Syntax:

Types of doctype:

Transitional: It contains all HTML elements and attributes, INCLUDINGpresentational and deprecated elements (like font). Framesets are not allowed.

Frameset: This DTD is equal to HTML 4.01 Transitional, but allows the use offrameset content.

DTD The purpose of a DTD (Document Type Definition) is to define the legalbuilding blocks of an HTML document.

A DTD defines the document structure with a list of legal elements and attributes.

HTML Tag

Definition: The comment tag is used to insert a comment in the source code. A commentwill be ignored by the browser. One can use comments to explain code, which can

help while editing the source code at a later date.

Valid Syntax:

Standard Attributes: The comment tag does not support any standard attributes.
http://www.w3schools.com/tags/tag_tbody.asphttp://www.w3schools.com/tags/tag_td.asphttp://www.w3schools.com/tags/tag_textarea.asphttp://www.w3schools.com/tags/tag_tfoot.asphttp://www.w3schools.com/tags/tag_th.asphttp://www.w3schools.com/tags/tag_thead.asphttp://www.w3schools.com/tags/tag_title.asphttp://www.w3schools.com/tags/tag_tr.asphttp://www.w3schools.com/tags/tag_font_style.asphttp://www.w3schools.com/tags/tag_u.asphttp://www.w3schools.com/tags/tag_ul.asphttp://www.w3schools.com/tags/tag_tbody.asphttp://www.w3schools.com/tags/tag_td.asphttp://www.w3schools.com/tags/tag_textarea.asphttp://www.w3schools.com/tags/tag_tfoot.asphttp://www.w3schools.com/tags/tag_th.asphttp://www.w3schools.com/tags/tag_thead.asphttp://www.w3schools.com/tags/tag_title.asphttp://www.w3schools.com/tags/tag_tr.asphttp://www.w3schools.com/tags/tag_font_style.asphttp://www.w3schools.com/tags/tag_u.asphttp://www.w3schools.com/tags/tag_ul.asp


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HTML Tag: html:

Definition: The root element that specifies that the content of the document is HTML.The opening tag immediately follows the DOCTYPE declaration and the closing tag is the

last thing in the document. The html element must contain the head and the body

elements.

Valid Syntax:

Standard Attributes: Doctype of html. xmlns is used to define the XMLnamespace. The value must be http://www.w3.org/1999/xhtml.

HTML Tag: head:

Definition: The header of an HTML document where information about the document isplaced.

One must use the title element within the head element and meta, style, script,baseand linkcan also be used.Valid Syntax:Shiny Gongs

Standard Attributes

None.

HTML Tag: body:

Definition: The main body of an HTML document where all of the content is placed.

One must use this element and it should be used just once. It must startimmediately after the closing head tag and end directly before the closing html

tag.Valid Syntax:

[a whole body of the web page]

Standard Attributes

None.
http://htmldog.com/reference/htmltags/doctype/http://htmldog.com/reference/htmltags/head/http://htmldog.com/reference/htmltags/head/http://htmldog.com/reference/htmltags/body/http://www.w3.org/1999/xhtmlhttp://htmldog.com/reference/htmltags/title/http://htmldog.com/reference/htmltags/title/http://htmldog.com/reference/htmltags/title/http://htmldog.com/reference/htmltags/meta/http://htmldog.com/reference/htmltags/style/http://htmldog.com/reference/htmltags/script/http://htmldog.com/reference/htmltags/script/http://htmldog.com/reference/htmltags/base/http://htmldog.com/reference/htmltags/base/http://htmldog.com/reference/htmltags/link/http://htmldog.com/reference/htmltags/link/http://htmldog.com/reference/htmltags/head/http://htmldog.com/reference/htmltags/head/http://htmldog.com/reference/htmltags/html/http://htmldog.com/reference/htmltags/doctype/http://htmldog.com/reference/htmltags/head/http://htmldog.com/reference/htmltags/body/http://www.w3.org/1999/xhtmlhttp://htmldog.com/reference/htmltags/title/http://htmldog.com/reference/htmltags/meta/http://htmldog.com/reference/htmltags/style/http://htmldog.com/reference/htmltags/script/http://htmldog.com/reference/htmltags/base/http://htmldog.com/reference/htmltags/link/http://htmldog.com/reference/htmltags/head/http://htmldog.com/reference/htmltags/html/


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HTML Tag: div:

Division. Defines a block of HTML. Commonly used to apply CSS to a chunk of a page.Valid Syntax:

[division part]

[division part]

Attributes:

Core attributes I18n (internationalization) attributes Event attributes.

Core Attributes: All

HTML Tag

Definition

The tag provides no visual change by itself.

The tag provides a way to add a hook to a part of a text or a part of adocument.

When the text is hooked in a span element you can add styles to the content, ormanipulate the content with for example JavaScript.

Used to make any field in form as mandatory.

Valid Syntax:

light blue

Standard Attributes: All

HTML Tag

Definition and Usage

The tag defines the relationship between a document and an externalresource.


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The tag is most used to link to style sheets.

Used inside the head tag.

Valid Syntax:

Optional Attributes : All

Core Attribute: All

HTML Tag

DefinitionMetadata is information about data.

The tag provides metadata about the HTML document. Metadata will notbe displayed on the page, but will be machine parsable.

Meta elements are typically used to specify page description, keywords, author ofthe document, last modified, and other metadata.

The tag always goes inside the head element.

The metadata can be used by browsers (how to display content or reload page),search engines (keywords), or other web services.

Valid Syntax:

Required Attributes: All

Optional Attributes All

Note: Metadata is always passed as name/value pairs.


Event Attributes:

The tag does not support any event attributes.


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HTML Tag: style


Used to define CSS at a page-level (as opposed to an external CSS file). A style element must appear inside the headelement.

The tag is used to define style information for an HTML document.

Inside the style element you specify how HTML elements should render in abrowser.

The required type attribute defines the content of the style element. The onlypossible value is "text/css".

The style element always goes inside the head section.

To link to an external style sheet, use the tag.

Valid syntax:

h1 {color:red}p {color:blue}

Attribute:

type: text/css Specifies the MIME type of the style sheet

Optional Attributes: media

Standard Attributes: all

Event AttributesThe tag does not support any event attributes.

HTML Tag: h1, h2, h3, h4, h5, and h6

Heading 1 to Heading 6 (1 being the highest level, 6 being the lowest). Headingsshould be used in order and h1 used just once.

The to tags are used to define HTML headings.

defines the largest heading and defines the smallest heading.

Valid syntax:

This is heading 1This is heading 2This is heading 3This is heading 4
http://htmldog.com/reference/htmltags/head/http://htmldog.com/reference/htmltags/head/http://www.w3schools.com/tags/tag_link.asphttp://www.w3schools.com/tags/att_style_type.asphttp://htmldog.com/reference/htmltags/head/http://www.w3schools.com/tags/tag_link.asphttp://www.w3schools.com/tags/att_style_type.asp


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This is heading 5This is heading 6

Optional Attributes:align


Event Attributes: mouse and keyboard

HTML Tag: strong

Strong emphasis.

The , , , , , , , and tags areall phrase tags. They are not deprecated, but it is possible to achieve richer effectwith CSS.

Valid syntax:

Tag Description

Renders as emphasized text

Renders as strong (highlighted) text

Defines a definition term

Defines computer code text

Defines sample computer code

Defines keyboard text

Defines a variable part of a text Defines a citation


Event Attributes: mouse and keyboard

HTML Tag


The tag defines an anchor. An anchor can be used in two ways:

1. To create a link to another document, by using the href attribute2. To create a bookmark inside a document, by using the name attribute

The a element is usually referred to as a link or a hyperlink.


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The most important attribute of the a element is the href attribute, which indicates thelinks destination.

By default, links will appear as follows in all browsers:

An unvisited link is underlined and blue A visited link is underlined and purple An active link is underlined and red

Valid syntax:

Link to a URI

Link to a page anchor

Optional Attributes

href can be used to specify the target of a link.

charset can be used to specify the character set of the target of a link.

type can be used to specify the MIME type of the target of a link.

hreflang can be used to specify the language (in the form of a language code) of

the target of a link. It should only be used when href is also used.

rel can be used to specify the relationship of the target of the link to the current

page. rev can be used to specify the relationship of the current page to the target of the

link. accesskey can be used to associate a keyboard shortcut to the element.

tabindex can be used to specify where the element appears in the tab order of the

page.

HTML Tag


The tag specifies a default address or a default target for all links on apage.

The tag goes inside the head element.

Valid syntax:


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Attributes

href

target

Standard Attributes

The tag does not support any standard attributes.

Images and Objects

HTML Tag

Definition

The tag embeds an image in an HTML page.

Notice that images are not technically inserted into an HTML page, images arelinked to HTML pages. The tag creates a holding space for the referencedimage.

The tag has two required attributes: src and alt.

The alt attribute is meant to be used as an alternative text if the image is notavailable, not as a mouse-over text. To show a mouse-over text on images orimage-maps, use the title attribute, like this:

When a web page is loaded, it is the browser, at that moment, that actually getsthe image from a web server and inserts it into the page. Therefore, make sure that

the images actually stay in the same spot in relation to the web page, otherwiseyour visitors will get a broken link icon. The broken link icon is shown if thebrowser cannot find the image.

Valid syntax:

Required Attributes

src alt

Optional Attributes

longdesc

height


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width

HTML Tag

The tag defines an area inside an image-map (an image-map is an image withclickable areas).

The area element is always nested inside a tag.

Note: The usemap attribute in the tag is associated with themap element's nameattribute, and creates a relationship between the image and the map.

Valid syntax:

Required Attributes: alt

Optional Attributes: shape

poly

coordshrefnohrefaccesskeytabindex

Event Attributes: mouse and keyboard events

HTML Tag


The tag is used to define a client-side image-map. An image-map is animage with clickable areas.

The name attribute is required in the map element. This attribute is associatedwith the 's usemap attribute and creates a relationship between the imageand the map.
http://www.w3schools.com/tags/tag_img.asphttp://www.w3schools.com/tags/tag_map.asphttp://www.w3schools.com/tags/tag_map.asphttp://www.w3schools.com/tags/tag_img.asphttp://www.w3schools.com/tags/tag_map.asp


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The map element contains a number ofareaelements, that defines the clickableareas in the image map.

Valid syntax:

Required Attributes

id is used to uniquely identify the element.

Optional Attributes

class can be used to reference the element with CSS.

title can be used to specify a title for the element.

I18n attributes: all

Event attributes: all
http://www.w3schools.com/tags/tag_area.asphttp://www.w3schools.com/tags/tag_area.asphttp://htmldog.com/reference/htmltags/commonattributes/#i18nhttp://htmldog.com/reference/htmltags/commonattributes/#eventhttp://www.w3schools.com/tags/tag_area.asphttp://htmldog.com/reference/htmltags/commonattributes/#i18nhttp://htmldog.com/reference/htmltags/commonattributes/#event


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HTML Tag


The tag is used to include objects such as images, audio, videos, Java applets,ActiveX, PDF, and Flash.

The object element was intended to replace the img and applet elements. However,because of bugs and a lack of browser support this has not happened.

The object support in browsers depend on the object type. Unfortunately, the majorbrowsers use different codes to load the same object type.

Luckily, the object element provides a solution. If the object element is not displayed, thecode between the and tags will be executed. This way we canhave several nested object elements (one for each browser).

Note: The tag define run-time settings for the object

.Important: Do not use the tag for images, use the tag instead!

Valid syntax:

Required Attributes

None.

Optional Attributes

classid can be used to specify the location of the object in the form of a URL or

Windows Registry location. data can be used to specify the location of the data for the object in the form of a

URL. codebase can be used to specify the base location from which relative URLs

specified in the classid, data and archive attributes should be taken.

declare can be used to specify that the object is a declaration only. It must be

used in the format declare="declare".
http://www.w3schools.com/tags/tag_param.asphttp://www.w3schools.com/tags/tag_param.asp


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type can be used to specify the content type of the data specified by the data

attribute. codetype can be used to specify the content type of the object.

archive can be used to specify resources relevant to the object. The value should

be a URL or a number of URLs separated by spaces.

standby can be used to specify text that will be displayed while the object isloading.

width can be used to specify the width of the object (in pixels). This can also be

done with CSS. height can be used to specify the height of the object (in pixels). This can also be

done with CSS. name can be used to specify a name by which the object can be referenced.

tabindex can be used to specify where the element appears in the tab order of the

page.

Common attributes: all

HTML Tag


The tag is used to define parameters or variables for an object or appletelement.

Valid syntax:

Required Attributes

name is used so that the element can be referenced and processed by the object.

Optional Attributes

value can be used to specify the value of the parameter.

id can be used to uniquely identify the element.

type can be used to specify the content type.

valuetype can be used to specify the content type of the value attribute. Values

can be data, ref orobj
http://htmldog.com/reference/htmltags/commonattributes/http://htmldog.com/reference/htmltags/commonattributes/


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Lists

HTML Tag


The tag defines an unordered list (a bulleted list).

Use CSS to define the type of list.

Valid syntax:

CoffeeTeaMilk

Required Attributes : none

Standard Attribute: All

HTML Tag: ol


Ordered list. Used to define a list that has a logical sequence. Used in conjunctionwith li to define the list items.

The list can be numerical or alphabetical.

Valid syntax:

CoffeeTeaMilk

Core Attributes All
http://htmldog.com/reference/htmltags/li/http://htmldog.com/reference/htmltags/li/


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HTML Tag


The tag defines a list item.

The tag is used in both ordered () and unordered () lists. Use CSS to define the type of list and list item.

Valid syntax:

CoffeeTeaMilk

CoffeeTeaMilk

Required Attributes

None.

Optional Attributes

Common attributes

HTML Tag


The tag defines a definition list.

The tag is used in conjunction with (defines the item in the list) and (describes the item in the list).

Valid syntax:
http://htmldog.com/reference/htmltags/commonattributes/http://htmldog.com/reference/htmltags/commonattributes/


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Coffee- black hot drink

Milk- white cold drink

Standard Attributes

Core and language

Event Attributes

Keyboard event

Mouse event

HTML Tag


The tag defines an item in a definition list.

The tag is used in conjunction with (defines the definition list) and (describes the item in the list).

Valid syntax:

Coffee

- black hot drinkMilk- white cold drink

Standard Attributes

Core and language

Event Attributes

Keyboard event

Mouse event

HTML Tag


The tag is used to describe an item in a definition list.


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The tag is used in conjunction with (defines the definition list) and (defines the item in the list).

Inside a tag you can put paragraphs, line breaks, images, links, lists, etc.

Valid syntax:

Coffee- black hot drink

Milk- white cold drink

Standard Attributes

Core and language

Event Attributes Keyboard event

Mouse event

Tables

HTML Tag


The tag defines an HTML table.

A simple HTML table consists of the table element and one or more tr,th, and tdelements.

The tr element defines a table row, the th element defines a table header, and the tdelement defines a table cell.

A more complex HTML table may also include caption, col, colgroup, thead, tfoot, andtbody elements.

Valid syntax:

MonthSavings
http://www.w3schools.com/tags/tag_tr.asphttp://www.w3schools.com/tags/tag_th.asphttp://www.w3schools.com/tags/tag_th.asphttp://www.w3schools.com/tags/tag_td.asphttp://www.w3schools.com/tags/tag_tr.asphttp://www.w3schools.com/tags/tag_th.asphttp://www.w3schools.com/tags/tag_td.asp


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January$100

Optional Attributes:

DTD indicates in which HTML 4.01/XHTML 1.0 DTDthe attribute is allowed. S=Strict,T=Transitional, and F=Frameset.

Standard Attributes

Core and language

Event Attributes

Keyboard event

Mouse event

HTML Tag


The tag defines a row in an HTML table.

A tr element contains one or more thortd elements.

Valid syntax:

MonthSavings

January$100

Optional Attributes



align right Aligns the content in a table row
http://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/tag_th.asphttp://www.w3schools.com/tags/tag_th.asphttp://www.w3schools.com/tags/tag_td.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_tr_align.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/tag_th.asphttp://www.w3schools.com/tags/tag_td.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_tr_align.asp


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leftcenterjustifychar

bgcolor

rgb(x,x,x)

#xxxxxxcolorname

Deprecated. Use styles instead.Specifies a background color for a table row

char character Aligns the content in a table row to a character

charoff numberSets the number of characters the content will be alignedfrom the character specified by the char attribute

valign

topmiddlebottombaseline

Vertical aligns the content in a table row

Standard Attributes Core and language

Event Attributes

Keyboard event

Mouse event

HTML Tag


The tag defines a standard cell in an HTML table.

An HTML table has two kinds of cells:

Header cells - contains header information (created with the thelement) Standard cells - contains data (created with the td element)

The text in a th element is bold and centered.

The text in a td element is regular and left-aligned.

Use the colspan and rowspan attributes to let the content span over multiple

columns or rows!

Valid syntax:
http://www.w3schools.com/tags/att_tr_bgcolor.asphttp://www.w3schools.com/tags/att_tr_char.asphttp://www.w3schools.com/tags/att_tr_charoff.asphttp://www.w3schools.com/tags/att_tr_valign.asphttp://www.w3schools.com/tags/tag_th.asphttp://www.w3schools.com/tags/tag_th.asphttp://www.w3schools.com/tags/att_tr_bgcolor.asphttp://www.w3schools.com/tags/att_tr_char.asphttp://www.w3schools.com/tags/att_tr_charoff.asphttp://www.w3schools.com/tags/att_tr_valign.asphttp://www.w3schools.com/tags/tag_th.asp


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MonthSavings

January$100

Optional Attributes


Attribute Value Description DTD

abbr textSpecifies an abbreviated version of the contentin a cell

STF

align

leftrightcenterjustifychar

Aligns the content in a cell STF

axis category_name Categorizes cells STF

bgcolor

rgb(x,x,x)#xxxxxx

colorname

Deprecated. Use styles instead.

Specifies a background color for a cell TF

char character Aligns the content in a cell to a character STF

charoff numberSets the number of characters the content will bealigned from the character specified by the charattribute

STF

colspan numberSpecifies the number of columns a cell shouldspan

STF

headers headercells'_id Specifies the table headers related to a cell STF

heightpixels

%Deprecated. Use styles instead.Sets the height of a cell

TF

nowrap nowrapDeprecated. Use styles instead.Specifies that the content inside a cell should notwrap

TF

rowspan number Sets the number of rows a cell should span STF

scope colcolgrouprow

Defines a way to associate header cells and datacells in a table

STF
http://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_td_abbr.asphttp://www.w3schools.com/tags/att_td_align.asphttp://www.w3schools.com/tags/att_td_axis.asphttp://www.w3schools.com/tags/att_td_bgcolor.asphttp://www.w3schools.com/tags/att_td_char.asphttp://www.w3schools.com/tags/att_td_charoff.asphttp://www.w3schools.com/tags/att_td_colspan.asphttp://www.w3schools.com/tags/att_td_headers.asphttp://www.w3schools.com/tags/att_td_height.asphttp://www.w3schools.com/tags/att_td_nowrap.asphttp://www.w3schools.com/tags/att_td_rowspan.asphttp://www.w3schools.com/tags/att_td_scope.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_td_abbr.asphttp://www.w3schools.com/tags/att_td_align.asphttp://www.w3schools.com/tags/att_td_axis.asphttp://www.w3schools.com/tags/att_td_bgcolor.asphttp://www.w3schools.com/tags/att_td_char.asphttp://www.w3schools.com/tags/att_td_charoff.asphttp://www.w3schools.com/tags/att_td_colspan.asphttp://www.w3schools.com/tags/att_td_headers.asphttp://www.w3schools.com/tags/att_td_height.asphttp://www.w3schools.com/tags/att_td_nowrap.asphttp://www.w3schools.com/tags/att_td_rowspan.asphttp://www.w3schools.com/tags/att_td_scope.asp


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rowgroup

valign


Vertical aligns the content in a cell STF

widthpixels%

Deprecated. Use styles instead.Specifies the width of a cell

Standard Attributes

Core and language

Event Attributes

Keyboard event

Mouse event

HTML Tag


The tag defines a header cell in an HTML table.

An HTML table has two kinds of cells:

Header cells - contains header information (created with the th element) Standard cells - contains data (created with the td element)

The text in a th element is bold and centered.

\he text in a td element is regular and left-aligned.

Use the colspan and rowspan attributes to let the content span over multiplecolumns or rows!

Valid syntax:

MonthSavings

January$100
http://www.w3schools.com/tags/att_td_valign.asphttp://www.w3schools.com/tags/att_td_width.asphttp://www.w3schools.com/tags/tag_td.asphttp://www.w3schools.com/tags/att_td_valign.asphttp://www.w3schools.com/tags/att_td_width.asphttp://www.w3schools.com/tags/tag_td.asp


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Optional Attributes



abbr textSpecifies an abbreviated version of the contentin a cell

STF

align


Aligns the content in a cell STF

axis category_name Categorizes cells STF

bgcolor

rgb(x,x,x)

#xxxxxxcolorname


Specifies a background color for a cell TF

char character Aligns the content in a cell to a character STF

charoff numberSets the number of characters the content will bealigned from the character specified by the charattribute

STF

colspan number Sets the number of columns a cell should span STF

heightpixels

%Deprecated. Use styles instead.Sets the height of a cell

TF

nowrap nowrap


Specifies that the content inside a cell should notwrap TF

rowspan number Sets the number of rows a cell should span STF

scope

colcolgrouprowrowgroup

Defines a way to associate header cells and datacells in a table

STF

valign


Vertical aligns the content in a cell STF

widthpixels%

Deprecated. Use styles instead.Specifies the width of a cell

Standard Attributes

Core and language
http://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_th_abbr.asphttp://www.w3schools.com/tags/att_th_align.asphttp://www.w3schools.com/tags/att_th_axis.asphttp://www.w3schools.com/tags/att_th_bgcolor.asphttp://www.w3schools.com/tags/att_th_char.asphttp://www.w3schools.com/tags/att_th_charoff.asphttp://www.w3schools.com/tags/att_th_colspan.asphttp://www.w3schools.com/tags/att_th_height.asphttp://www.w3schools.com/tags/att_th_nowrap.asphttp://www.w3schools.com/tags/att_th_rowspan.asphttp://www.w3schools.com/tags/att_th_scope.asphttp://www.w3schools.com/tags/att_th_valign.asphttp://www.w3schools.com/tags/att_th_width.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_th_abbr.asphttp://www.w3schools.com/tags/att_th_align.asphttp://www.w3schools.com/tags/att_th_axis.asphttp://www.w3schools.com/tags/att_th_bgcolor.asphttp://www.w3schools.com/tags/att_th_char.asphttp://www.w3schools.com/tags/att_th_charoff.asphttp://www.w3schools.com/tags/att_th_colspan.asphttp://www.w3schools.com/tags/att_th_height.asphttp://www.w3schools.com/tags/att_th_nowrap.asphttp://www.w3schools.com/tags/att_th_rowspan.asphttp://www.w3schools.com/tags/att_th_scope.asphttp://www.w3schools.com/tags/att_th_valign.asphttp://www.w3schools.com/tags/att_th_width.asp


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Event Attributes

Keyboard event

Mouse event

HTML Tag


The tag is used to group the body content in an HTML table.

The tbody element should be used in conjunction with the theadandtfootelements.

The thead element is used to group the header content in an HTML table and the tfootelement is used to group the footer content in an HTML table.

must appear before within a table, so that a browser can render the footbefore receiving all the rows of data.

Notice that these elements will not affect the layout of the table by default. However, youcan use CSS to let these elements affect the table's layout.

Valid syntax:

MonthSavings

Sum$180

January$100

February$80
http://www.w3schools.com/tags/tag_thead.asphttp://www.w3schools.com/tags/tag_thead.asphttp://www.w3schools.com/tags/tag_tfoot.asphttp://www.w3schools.com/tags/tag_tfoot.asphttp://www.w3schools.com/tags/tag_tfoot.asphttp://www.w3schools.com/tags/tag_thead.asphttp://www.w3schools.com/tags/tag_tfoot.asp


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Optional Attributes



align

rightleftcenterjustifychar

Aligns the content inside the tbody element STF

char characterAligns the content inside the tbody element to acharacter

STF

charoff numberSets the number of characters the content insidethe tbody element will be aligned from thecharacter specified by the char attribute

STF

valign


Vertical aligns the content inside the tbodyelement

STF

Standard Attributes

Core and language

Event Attributes

Keyboard event

Mouse event

HTML Tag


The tag is used to group the header content in an HTML table.

The thead element should be used in conjunction with the tbodyandtfootelements.

The tbody element is used to group the body content in an HTML table and thetfoot element is used to group the footer content in an HTML table.

must appear before within a table, so that a browser can renderthe foot before receiving all the rows of data.
http://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_tbody_align.asphttp://www.w3schools.com/tags/att_tbody_char.asphttp://www.w3schools.com/tags/att_tbody_charoff.asphttp://www.w3schools.com/tags/att_tbody_valign.asphttp://www.w3schools.com/tags/tag_tbody.asphttp://www.w3schools.com/tags/tag_tbody.asphttp://www.w3schools.com/tags/tag_tfoot.asphttp://www.w3schools.com/tags/tag_tfoot.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_tbody_align.asphttp://www.w3schools.com/tags/att_tbody_char.asphttp://www.w3schools.com/tags/att_tbody_charoff.asphttp://www.w3schools.com/tags/att_tbody_valign.asphttp://www.w3schools.com/tags/tag_tbody.asphttp://www.w3schools.com/tags/tag_tfoot.asp


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Notice that these elements will not affect the layout of the table by default.However, you can use CSS to let these elements affect the table's layout.

Optional Attributes



align

rightleftcenterjustifychar

Aligns the content inside the thead element STF

char characterAligns the content inside the thead element to acharacter

STF

charoff numberSets the number of characters the content insidethe thead element will be aligned from thecharacter specified by the char attribute

STF

valign


Vertical aligns the content inside the theadelement

STF

Standard Attributes

Core and language

Event Attributes

Keyboard event

Mouse event

HTML Tag


The tag is used to group the footer content in an HTML table.

The tfoot element should be used in conjunction with thethead and tbodyelements.
http://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_thead_align.asphttp://www.w3schools.com/tags/att_thead_char.asphttp://www.w3schools.com/tags/att_thead_charoff.asphttp://www.w3schools.com/tags/att_thead_valign.asphttp://www.w3schools.com/tags/tag_thead.asphttp://www.w3schools.com/tags/tag_thead.asphttp://www.w3schools.com/tags/tag_tbody.asphttp://www.w3schools.com/tags/tag_tbody.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_thead_align.asphttp://www.w3schools.com/tags/att_thead_char.asphttp://www.w3schools.com/tags/att_thead_charoff.asphttp://www.w3schools.com/tags/att_thead_valign.asphttp://www.w3schools.com/tags/tag_thead.asphttp://www.w3schools.com/tags/tag_tbody.asp


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The thead element is used to group the header content in an HTML table and the tbodyelement is used to group the body content in an HTML table.

Note: must appear before within a table, so that a browser can renderthe foot before receiving all the rows of data.

Notice that these elements will not affect the layout of the table by default. However, youcan use CSS to let these elements affect the table's layout.

Optional Attributes



align

right

leftcenterjustifychar

Aligns the content inside the tfoot element STF

char characterAligns the content inside the tfoot element to acharacter

STF

charoff numberSets the number of characters the content insidethe tfoot element will be aligned from thecharacter specified by the char attribute

STF

valign

top

middlebottombaseline

Vertical aligns the content inside the tfootelement STF

Standard Attributes

Core and language

Event Attributes

Keyboard event

Mouse event
http://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_tfoot_align.asphttp://www.w3schools.com/tags/att_tfoot_char.asphttp://www.w3schools.com/tags/att_tfoot_charoff.asphttp://www.w3schools.com/tags/att_tfoot_valign.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_tfoot_align.asphttp://www.w3schools.com/tags/att_tfoot_char.asphttp://www.w3schools.com/tags/att_tfoot_charoff.asphttp://www.w3schools.com/tags/att_tfoot_valign.asp


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HTML Tag


The tag defines attribute values for one or more columns in a table.

The tag is useful for applying styles to entire columns, instead of repeatingthe styles for each cell, for each row.

The tag can only be used inside a table or a colgroup element

Tip: Add the style attribute to the tag, and let CSS take care of backgrounds,width and borders. These are the ONLY CSS properties that work with the tag.

Valid syntax:

ISBNTitlePrice

3476896My first HTML

$53

Optional Attributes



align


Specifies the alignment of the content related to a colelement

STF

char characterSpecifies the alignment of the content related to a colelement to a character

STF

charoff number Specifies the number of characters the content will be STF
http://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_col_align.asphttp://www.w3schools.com/tags/att_col_char.asphttp://www.w3schools.com/tags/att_col_charoff.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_col_align.asphttp://www.w3schools.com/tags/att_col_char.asphttp://www.w3schools.com/tags/att_col_charoff.asp


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aligned from the character specified by the charattribute

span numberSpecifies the number of columns a col elementshould span

STF

valign

top

middlebottombaseline

Specifies the vertical alignment of the content relatedto a col element

STF

width%

pixelsrelative_length

Specifies the width of a col element STF

Standard Attributes

Core and language


Mouse event

HTML Tag


The tag is used to group columns in a table for formatting.

The tag is useful for applying styles to entire columns, instead ofrepeating the styles for each cell, for each row.

The tag can only be used inside a table element.

Tip: Add the style attribute to the tag, and let CSS take care ofbackgrounds, width and borders. These are the ONLY CSS properties that workwith the tag.

Optional Attributes

Same as

Standard Attributes

Core and language

Event Attributes

Keyboard event

Mouse event
http://www.w3schools.com/tags/att_col_span.asphttp://www.w3schools.com/tags/att_col_valign.asphttp://www.w3schools.com/tags/att_col_width.asphttp://www.w3schools.com/tags/att_col_span.asphttp://www.w3schools.com/tags/att_col_valign.asphttp://www.w3schools.com/tags/att_col_width.asp


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HTML Tag


The tag defines a table caption.

The tag must be inserted immediately after the tag. You canspecify only one caption per table. Usually the caption will be centered above thetable.

Valid syntax:

Monthly savingsMonthSavings

January$100

Optional Attributes

Align

Standard Attributes

Core and language

Event Attributes

Keyboard event

Mouse event

HTML Tag


The tag is used to create an HTML form for user input.

A form can contain input elements like text fields, checkboxes, radio-buttons,submit buttons and more. A form can also contain select menus, textarea, fieldset,legend, and label elements.

Forms are used to pass data to a server.

Note: The form element is a block-level element, and creates a line break beforeand after itself.


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Valid syntax:

First name:
Last name:

Required Attributes

Action

Optional Attributes


accept MIME_typeSpecifies the types of files thatcan be submitted through a fileupload

STF

accept-charset charsetSpecifies the character-sets theserver can handle for form-data

STF

enctype

application/x-www-form-urlencodedmultipart/form-datatext/plain

Specifies how form-data shouldbe encoded before sending it to aserver

STF

methodgetpost

Specifies how to send form-data STF

name name Specifies the name for a form TF

target

_blank

_self_parent_topframename

Deprecated. Specifies where toopen the action UR

Standard Attributes

Core and language

Event Attributes

Keyboard event Mouse event

HTML Tag


The tag is used to select user information.
http://www.w3schools.com/tags/att_form_accept.asphttp://www.w3schools.com/tags/att_form_accept_charset.asphttp://www.w3schools.com/tags/att_form_enctype.asphttp://www.w3schools.com/tags/att_form_method.asphttp://www.w3schools.com/tags/att_form_name.asphttp://www.w3schools.com/tags/att_form_target.asphttp://www.w3schools.com/tags/att_form_accept.asphttp://www.w3schools.com/tags/att_form_accept_charset.asphttp://www.w3schools.com/tags/att_form_enctype.asphttp://www.w3schools.com/tags/att_form_method.asphttp://www.w3schools.com/tags/att_form_name.asphttp://www.w3schools.com/tags/att_form_target.asp


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An input field can vary in many ways, depending on the type attribute. An inputfield can be a text field, a checkbox, a password field, a radio button, a button,and more.

Valid syntax:

First name:
Last name:

Standard Attributes

Core and language

Event Attributes


HTML Tag


The tag defines a multi-line text input control.

A text area can hold an unlimited number of characters, and the text renders in afixed-width font (usually Courier).

The size of a textarea can be specified by the cols and rows attributes, or even

better; through CSS' height and width properties.

Valid syntax:

At W3Schools you will find all the Web-building tutorials you need, from basic HTMLto advanced XML, SQL, ASP, and PHP.

Required Attributes

Col,

Rows

Optional Attributes

disabled

name

readonly


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Standard Attributes

Core and language

Event Attributes

Keyboard event

Mouse event

HTML Tag


The tag is used to create a select list (drop-down list).

The tags inside the select element define the available options in the list.

Tip: The select element is a form control and can be used in a form to collect userinput.

Optional Attributes

disabled

name

multiple

size

Standard Attributes

Core and language

Event Attributes


HTML Tag


The tag defines an option in a select list.

The option element goes inside the select element.

Tip: If you have a long list of options, you can group together related optionswith the tag.

Valid syntax:

VolvoSaabMercedes
http://www.w3schools.com/tags/tag_optgroup.asphttp://www.w3schools.com/tags/tag_optgroup.asp


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Audi

Optional Attributes

disabled

labelselected

value

Standard Attributes

Core and language

Event Attributes

Keyboard event

Mouse event

HTML Tag

VolvoSaab

MercedesAudi


The tag is used to group together related options in a select list.

If you have a long list of options, groups of related options are easier to handle for theuser.

Required attributed:

label

Optional Attributes

disabled

Standard Attributes

Core and language


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Event Attributes

Keyboard event

Mouse event

HTML Tag


The tag defines a push button.

Inside a button element you can put content, like text or images. This is thedifference between this element and buttons created with the input element.

Always specify the type attribute for the button. The default type for InternetExplorer is "button", while in other browsers (and in the W3C specification) it is"submit".

Valid syntax:

Click Me!

Optional Attributes

disabled

label

name

value

Standard Attributes

Core and language

Event Attributes

Keyboard eventMouse event

HTML Tag


The tag defines a label for an input element.

The label element does not render as anything special for the user. However, it

provides a usability improvement for mouse users, because if the user clicks onthe text within the label element, it toggles the control.

The for attribute of the tag should be equal to the id attribute of therelated element to bind them together.


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Valid syntax:

Male

Female

Optional Attributes

for

Standard Attributes

Core and language


Mouse event

HTML Tag


The tag is used to logically group together elements in a form.

The tag draws a box around the related form elements.

The tag defines a caption for the fieldset element.

Valid syntax:

Personalia:Name:
Email:
Date of birth:

Standard Attributes

Core and language

Event Attributes

Keyboard event


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Mouse event

HTML Tag


The tag defines one particular window (frame) within a frameset.

Each frame in a frameset can have different attributes, such as border, scrolling,the ability to resize, etc.

Valid syntax:

Optional Attributes



frameborder01

Specifies whether or not to display a border around aframe

F

longdesc URLSpecifies a page that contains a long description of thecontent of a frame

F

marginheight pixels Specifies the top and bottom margins of a frame F

marginwidth pixels Specifies the left and right margins of a frame F

name name Specifies the name of a frame F

noresize noresize Specifies that a frame cannot be resized F

scrollingyesnoauto

Specifies whether or not to display scrollbars in a

frameF

src URL Specifies the URL of the document to show in a frameF

Standard Attributes

The tag supports the following standard attributes:
http://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_frame_frameborder.asphttp://www.w3schools.com/tags/att_frame_longdesc.asphttp://www.w3schools.com/tags/att_frame_marginheight.asphttp://www.w3schools.com/tags/att_frame_marginwidth.asphttp://www.w3schools.com/tags/att_frame_name.asphttp://www.w3schools.com/tags/att_frame_noresize.asphttp://www.w3schools.com/tags/att_frame_scrolling.asphttp://www.w3schools.com/tags/att_frame_src.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_frame_frameborder.asphttp://www.w3schools.com/tags/att_frame_longdesc.asphttp://www.w3schools.com/tags/att_frame_marginheight.asphttp://www.w3schools.com/tags/att_frame_marginwidth.asphttp://www.w3schools.com/tags/att_frame_name.asphttp://www.w3schools.com/tags/att_frame_noresize.asphttp://www.w3schools.com/tags/att_frame_scrolling.asphttp://www.w3schools.com/tags/att_frame_src.asp


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class classname Specifies a classname for an element F

id id Specifies a unique id for an element F

style style_definition Specifies an inline style for an element F

title text Specifies extra information about an element F

Event Attributes

According to the W3C, the tag does not support any event attributes.

However, the onload event is supported in all browsers.

HTML Tag


The tag defines a frameset.

The frameset element holds two or more frame elements. Each frame elementholds a separate document.

The frameset element states only how many columns or rows there will be in theframeset.

Note: If you want to validate a page containing frames, be sure the doctype is setto "Frameset DTD". Read more about doctypes.

Important: You cannot use the body element together with the frameset element.However, if you add a tag containing some text for browsers that donot support frames, you will have to enclose the text in a body element.

Valid syntax:

Optional Attributes


colspixels

%*

Specifies the number and size of columns in a frameset F
http://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_frameset_cols.asphttp://www.w3schools.com/tags/tag_doctype.asphttp://www.w3schools.com/tags/att_frameset_cols.asp


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rowspixels

%*

Specifies the number and size of rows in a frameset F

Event Attributes

According to the W3C, the tag does not support any event attributes.

However, the onload event is supported in all browsers.
http://www.w3schools.com/tags/att_frameset_rows.asphttp://www.w3schools.com/tags/att_frameset_rows.asp

w3 Specification

Documents

Transcript of w3 Specification