264343 - variable context loss when overloading onsubmit

Status: NEW

(Core :: DOM: Core & HTML, defect, P5)

Description

[Eric Stevens]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; rv:1.7.3) Gecko/20041001 Firefox/0.10.1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; rv:1.7.3) Gecko/20041001 Firefox/0.10.1

When overloading a form's onsubmit event, the scope of the "this" object is
lost, and "this" becomes a reference to the window object within the original code.

I'm not certain that this qualifies as a bug, but it does represent different
behavior from /that/other/evIl/browsEr/.  IE's treatment seems more intuitive.

Reproducible: Always
Steps to Reproduce:
Create a form with an onsubmit event that references the "this" object.
Use javascript to modify that event by capturing a reference to it, and calling
that reference.  EG:
	var theForm = document.getElementById("myForm");
	var oldSubmitCodeRef = theForm.onsubmit;
	theForm.onsubmit = function(e){
		return oldSubmitCodeRef(e);
	}

Execute the form's submit event and observe that the scope of "this" within the
original code no longer references the form object.
Actual Results:  
"this" becomes a reference to the window.

Expected Results:  
"this" should have continued to be a reference to the form.

Comment 1

[Eric Stevens]

Attachment: Test case

Comment 2

[Igor Bukanov]

Rhino has nothing to do with mozilla/firefox. 

Comment 3

[Firefox Bug Husbandry Bot]

https://bugzilla.mozilla.org/show_bug.cgi?id=1472046

Move all DOM bugs that haven’t been updated in more than 3 years and has no one currently assigned to P5.

If you have questions, please contact :mdaly.