1010241 - Named access on the Window object (via gsp, or global scope polluter) doesn't return an HTMLCollection when multiple elements have the relevant name

Status: NEW

(Core :: DOM: Core & HTML, defect, P3)

Description

[Arkadiusz Michalski (Spirit)]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0 (Beta/Release)
Build ID: 20140506152807

Steps to reproduce:

In HTML spec we have this:
http://www.whatwg.org/specs/web-apps/current-work/#named-access-on-the-window-object

But in Firefox for more than one element with same name or id we don't get HTMLCollection, but single element. Chrome and IE works as HTML said.

Small test:

<img name="ups" src="">
<img id="ups" src="">
<p id="correct">First P.</p>

<script>

	document.write(correct); // [object HTMLParagraphElement]
	document.write("<br>");
	document.write(this.correct); // [object HTMLParagraphElement]
	document.write("<br>");
	document.write(window.correct); // [object HTMLParagraphElement]

	document.write("<br><br>");

	document.write(ups); // [object HTMLImageElement] (should be [object HTMLCollection])
	document.write("<br>");
	document.write(this.ups); // [object HTMLImageElement] (should be [object HTMLCollection])
	document.write("<br>");
	document.write(window.ups); // [object HTMLImageElement] (should be [object HTMLCollection])

</script>

I don't check every case (nested browsing context).

Comment 1

[Boris Zbarsky [:bzbarsky]]

Note also bug 903572.  It's not clear whether the current spec draft (which just documented what IE did, last I checked) is really what we want here.

Comment 2

[Arkadiusz Michalski (Spirit)]

Very well that you wrote, because I planned to open next for the Document, now I see its not necessary. And in fact it looks like documented exactly what IE did:

<img id="ups" name="" src="">
<br>
<script>
	document.write(document.ups); // undefined in IE, [object HTMLImageElement] in Chrome and Firefox 
</script>

but in other site Firefox still has more differences:

<img name="ups" src="">
<img name="ups" src="">
<br>
<script>
	document.write(document.ups); // [object NodeList] in Firefox, [object HTMLCollection] in Chrome and IE
</script>

Just report this and wait what you decide in the future.

Comment 4

[Boris Zbarsky [:bzbarsky]]

There's a test at http://w3c-test.org/html/browsers/the-window-object/named-access-on-the-window-object/named-objects.html