792222 - getElementsByName is now returning a NodeList instead of an HTMLCollection

Status: RESOLVED INVALID

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

Description

[Jonathan Griffin (:jgriffin)]

getElementsByName is now returning a NodeList instead of an HTMLCollection.  Similar methods (like getElementsByTagName) still return an HTMLCollection.

This is breaking the Marionette test test_findelement.py:test_name.

If we should change our implementation not to rely on an HTMLCollection being returned, let me know.

To reproduce:

use the scratchpad to execute this JS:

alert(document.getElementsByName('foo'));

result:  [object NodeList]
expected result:  [object HTMLCollection]

Comment 1

[Boris Zbarsky [:bzbarsky]]

This was a purposeful change in bug 788532.  Per spec, this should be returning a NodeList.  Per spec, getElementsByTagName should be returning an HTMLCollection.