Selectors with multiple identical id is not works

Reported by:	shagren	Owned by:
Priority:	major	Milestone:	1.3.2
Component:	unfiled	Version:	1.3.1
Keywords:		Cc:
Blocked by:		Blocking:

Description

Please look for next code

    <div id="t">
        <span id="t">
                some content
        </span>
    </div>
    <a href="#" onclick="javascript: alert($('div#t div#t').length); return false;">Click me</a>

I see empty result when click. With 1.2.6 - works good. With 1.3.1 and nightly build(r6170) works bad.

When id is not identical works good.

Attachments (0)

Change History (4)

Changed February 12, 2009 12:33PM UTC by Markus.Staab comment:1

its no valid html to have several elements with an equal id..

id hast to be unique

Changed February 12, 2009 11:58PM UTC by dmethvin comment:2

resolution:	→ invalid
status:	new → closed

Right, ID attributes need to be unique. If they are not the browser can do something unpredictable.

Changed February 13, 2009 03:26PM UTC by shagren comment:3

resolution:	invalid
status:	closed → reopened

Yes, but it is works in 1.2.x. Then it can break old code.

Then need return old behavior or document changes somewhere.

Changed February 14, 2009 01:04AM UTC by dmethvin comment:4

resolution:	→ invalid
status:	reopened → closed

Sorry, but jQuery can't guarantee consistent behavior across browsers when the document is invalid, and duplicate id attributes are such a case.

Your test case returns 0 in both 1.2.6 and 1.3.1, which seems correct even if duplicate id attributes were allowed. There is no

div#t

in the document that has a descendent

div#t

If you feel this merits further discussion, please do not reopen the ticket; take it to the jQuery Dev group.

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