856420 - event.preventDefault is not working on the latest version of Firefox

Status: RESOLVED INCOMPLETE

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

Description

[salimfayad]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0
Build ID: 20130307023931

Steps to reproduce:

On the event of keydown, I am checking if the "enter" key has been clicked. If yes, then I focus the next input text. But there is another event which is on "blur" of this input text that validates the input to check if it is greater than a specific value, then it stops all the events by using the "event.preventDefault"


Actual results:

After installing the latest version of Firefox, it is not working any more. I even tried all the combinations:
event.preventDefault
event.stopPropagation
event.stopImmediatePropagation
return false

None of them worked.
On IE, it is working.


Expected results:

Those event stop bubbeling should work

Comment 1

[Olli Pettay [:smaug][[e-mail]]]

minimal testcase please.

Comment 2

[Ryan VanderMeulen [:RyanVM]]

Does this still reproduce for you? If so, a testcase showing the problem would be very helpful :)

Comment 3

[Ryan VanderMeulen [:RyanVM]]

Closing this as incomplete due to inactivity and the lack of a reproducible test case. Feel free to reopen the bug if there's an updated testcase that still reproduces the issue.

Comment 4

[Richard]

Hi guys, I was able to reproduce the issue.

The issue is reproducible on Windows in Firefox version 49.0.2 and 43.0.1.

can see behavior in:
https://jsfiddle.net/vy8nuvz6/3/

The code used is the following:

HTML

<form role="form"action="" method="get">
   <input id="input" type="suggest" placeholder="" value="" autocomplete="off">
   <button id="mysubmit" type="submit" >submit</button>
</form>

JS

var btn = document.getElementById("mysubmit"),
	input = document.getElementById("input");

input.onkeydown = function(e){
   if(e.which === 13){
    	e.preventDefault();
     	e.stopPropagation();
     	alert("keyDown");
			return false;
   }
};

btn.onclick = function(e){
	alert("onclick");
};

Please, I wait your answer

Comment 5

[Josh Matthews [:jdm]]

I tried the testcase in comment 4 and it does behave differently in Chrome and Firefox Nightly. In FF pressing enter shows a keyDown alert, followed by onclick, and then the form is submitted and the page reloads. In Chrome pressing enter only shows a keyDown alert, and the form is not submitted.

Comment 6

[Josh Matthews [:jdm]]

In FF 27 (as a random choice) the testcase behaves like Chrome. FF 47 only shows an onclick alert before submitting the form (???).

Comment 7

[Josh Matthews [:jdm]]

FF 45 and 48 behave like Chrome. FF 49 behaves like nightly. This seems to conflict with the results from comment 4. I'm going to go ahead and open a new bug for this.

Comment 8

[Josh Matthews [:jdm]]

I have filed bug 1316330.