ansaurus

Question

get an element's id

Answer 1

+4 A:

Yes you can just use the .id property of the dom element, for example:

myDOMElement.id

Or, something like this:

var inputs = document.getElementsByTagName("input");
for (var i = 0; i < inputs .length; i++) {
  alert(inputs[i].id);
}

Nick Craver 2010-09-02 00:55:10

and .id works with all html tags?

Rana 2010-09-02 00:58:24

@Rana - Yup, it's a DOM element property, and all specific elements inherit from the basic dom element, so they have the property :)

Nick Craver 2010-09-02 00:59:09

+1 nice one, learn something every day.

Tom 2010-09-02 14:03:24

Answer 2

+1 A:

This would work too:

document.getElementsByTagName('p')[0].id

(If element where the 1st paragraph in your document)

michael 2010-09-02 00:55:35

`getElementsByClassName` is not supported in IE (before IE9).

patrick dw 2010-09-02 01:06:17

It was a mistake. Meant 'getElementByTagName' for dealing with a tag

michael 2010-09-02 01:37:59

It's getElementsByTagName

I.devries 2010-09-02 08:30:05

Answer 3

+2 A:

Yes you can simply say:


function getID(oObject) 
{
    var id = oObject.id;
    alert("This object's ID attribute is set to \"" + id + "\"."); 
}

Morteza Manavi 2010-09-02 00:59:21

get an element's id