694343 - offsetLeft and offsetTop for AREA tags incorrect

Status: RESOLVED DUPLICATE of bug 123341

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

Description

[Rich Turner]

Attachment: ImageMapTestSite.zip

User Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3; MS-RTC LM 8; Zune 4.7; MS-RTC EA 2)

Steps to reproduce:

Attached a mouse hover event handler to <AREA> tags in an image <MAP>. Examined value of AREA's offsets.


Actual results:

Noticed that offsetLeft and offsetTop and jQuery's offset() values are incorrect in Firefox, but are reported correctly in IE9+.

I am unable to find the bounding area around an AREA tag.


Expected results:

Offsets should have reported the offset of the area tag, but they're not.

Comment 1

[j.j.]

This needs a testcase without jQuery involved. Otherwise it might be a bug in jQuery.

Comment 2

[Rich Turner]

Attachment: Test case using plain Javascript

Comment 3

[Rich Turner]

Have replaced the original test case with a pure Javascript test case. The problem remains.

Comment 4

[j.j.]

Attachment: testimage

Comment 5

[j.j.]

Attachment: testcase

Comment 6

[j.j.]

Attachment: testcase

Comment 7

[j.j.]

I'v no idea what 
  area.offsetLeft|offsetTop|offsetWidth|offsetHeight
should return per HTML5 spec.

WebKit and Opera return 0, IE returns the metrics as the reporter expects, Gecko returns the image's values.

Moving to Core. It's a dup of bug 123341 but maybe HTML5 has something to say meanwhile.

Comment 8

[Boris Zbarsky [:bzbarsky]]

If it does, then bug 123341 is the place to say it....