279313 - Event.detail has a wrong value on mouseup

Status: RESOLVED INVALID

(Core :: DOM: Events, defect)

Description

[Aurélien Maille]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8a6) Gecko/20050111
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8a6) Gecko/20050111

See the testcase for more details.

The bug seems to occur if the target node of mouseup is not the same as the one
for mousedown event.

Reproducible: Always

Steps to Reproduce:

Actual Results:  
The value of Event.detail is 0 if the target node of mouseup event is not the
same as the one for mousedown event

Expected Results:  
The value of Event.detail should be 1 even if the target node of mouseup event
is not the same as the one for mousedown event

Comment 1

[Aurélien Maille]

Attachment: testcase

Comment 2

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-eventgroupings-mouseevents
says:

The detail attribute inherited from UIEvent indicates the number of times a
mouse button has been pressed and released over the same screen location during
a user action. The attribute value is 1 when the user begins this action and
increments by 1 for each full sequence of pressing and releasing. If the user
moves the mouse between the mousedown and mouseup the value will be set to 0,
indicating that no click is occurring.