37116 - event.preventDefault() does not work on input text field

Status: VERIFIED DUPLICATE of bug 42553

(Core :: DOM: UI Events & Focus Handling, defect, P2)

Description

[Han Holl]

<?xml version="1.0"?>
<window
    id="demo-window"
    title="Demo preventDefault bug"
	xmlns:html="http://www.w3.org/TR/REC-html40"
    xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">

Repeat with the following:

<html:script>

function keyp(event)
{
	event.preventDefault();
}    

</html:script>
    <html:input onkeypress="keyp(event);"  />
</window>

Action: Type some characters in textfield

Expected result:
Text field should remain empty.

Actual result:
Characters appear in text field

Cheers,

Han Holl

Comment 1

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

Attachment: original testcase, slightly modified

Comment 2

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

I confirmed that the problem is that preventDefault does not work.  The event is
being received by the function (I tested with alerts).   Confirming bug.

Comment 3

[Jean-Francois Ducarroz]

*** Bug 38630 has been marked as a duplicate of this bug. ***

Comment 4

[Jean-Francois Ducarroz]

This is really needed for the autocomplete widget.

Comment 5

[joki (gone)]

Okay, this looks like we just need an easy check of the event's preventDefault 
state.  mjudge said he'd take this (hopefully) easy fix for me.

Comment 6

[rubydoo123]

setting to m17 for now

Comment 7

[mjudge]

need to move event listeners on ender-lite from the DOM to the frame itself. 
this way we can see if anyone prevented default.   straightforward but 
non-trivial.

Comment 8

[ckritzer (gone)]

Mass update:  changing qacontact to [e-mail]

Comment 9

[rubydoo123]

setting to nsbeta3+

Comment 10

[rubydoo123]

adding the brackets in the status

Comment 11

[mjudge]

*** This bug has been marked as a duplicate of 42553 ***

Comment 12

[ckritzer (gone)]

Marking VERIFIED DUPLICATE on:
- LinuxRH62 2000-09-13-08-M18 Commercial
- Win98     2000-09-13-08-M18 Mozilla
- MacOS86   2000-09-13-04-M18 Commercial