id attribute | id property

Sets or retrieves the string identifying the object.

Syntax

Property values

Type: String

any alphanumeric string that begins with a letter. The underscore (_) can also be used.

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.

Examples

This 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.

Code example: http://samples.msdn.microsoft.com/workshop/samples/author/dhtml/refs/id.htm

<script type="text/javascript">
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>

See also

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=email

input type=file

input type=hidden

input type=image

input type=number

input type=password

input type=radio

input type=range

input type=reset

input type=search

input type=submit

input type=tel

input type=text

input type=url

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

style

styleSheet

sub

sup

table

tBody

td

textArea

tFoot

th

tHead

title

tr

tt

u

ul

var

wbr

xml

xmp