id

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id

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W3C Recommendation

Summary

The id attribute is used for identifying elements in a document.


Applies to  ?

Examples

View live exampleThis example gets the ID attribute of each cell of a table. When the user clicks a cell, the object of the cell is passed to a function which returns the object's ID.

<script>
function getID(oObject) 
{
    var id = oObject.id;
    alert("This object's ID attribute is set to \"" + id + "\"."); 
}
</script>
<table border="">
    <tr>
        <td id="firstCell" onclick="getID(this);">Table Cell 1</td>
        <td id="secondCell" onclick="getID(this);">Table Cell 2</td>
        <td id="thirdCell" onclick="getID(this);">Table Cell 3</td>
    </tr>
</table>

Notes

Remarks

The id is an SGML identifier used as the target for hypertext links or for naming particular objects in associated style sheets. The id should be unique throughout the scope of the current document. If a document contains more than one object with the same identifier, the objects are exposed as a collection that can be referenced only in ordinal position. In versions earlier than Microsoft Internet Explorer 5, this property is read-only.

Syntax

Compatibility

Desktop

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support ? ? ? ? ?

Mobile

Feature Android BlackBerry Chrome for mobile Firefox Mobile (Gecko) IE Mobile Opera Mobile Opera Mini Safari Mobile
Basic support ? ? ? ? ? ? ? ?

See also

Related pages (MSDN)

  • style
  • a
  • abbr
  • acronym
  • address
  • applet
  • area
  • b
  • base
  • baseFont
  • bdo
  • bgSound
  • big
  • blockQuote
  • body
  • br
  • button
  • caption
  • center
  • cite
  • code
  • col
  • colGroup
  • comment
  • custom
  • dd
  • del
  • dfn
  • dir
  • div
  • dl
  • dt
  • em
  • embed
  • fieldSet
  • font
  • form
  • frame
  • frameSet
  • head
  • hn
  • hr
  • html
  • i
  • iframe
  • img
  • input type=button
  • input type=checkbox
  • input type=file
  • input type=hidden
  • input type=image
  • input type=password
  • input type=radio
  • input type=reset
  • input type=submit
  • input type=text
  • ins
  • isIndex
  • kbd
  • label
  • legend
  • li
  • link
  • listing
  • map
  • marquee
  • menu
  • nextID
  • noBR
  • noFrames
  • noScript
  • object
  • ol
  • optGroup
  • option
  • p
  • plainText
  • pre
  • q
  • rt
  • ruby
  • s
  • samp
  • script
  • select
  • small
  • span
  • strike
  • strong
  • styleSheet
  • sub
  • sup
  • table
  • tBody
  • td
  • textArea
  • tFoot
  • th
  • tHead
  • title
  • tr
  • tt
  • u
  • ul
  • var
  • wbr
  • xml
  • xmp

Attribution

This article contains content originally from external sources.

Portions of this content come from the Microsoft Developer Network: [Windows Internet Explorer API reference Article]