196291 - Non-critical blocked JavaScript functions such as Window.focus should only generate a warning or be ignored, rather than an error

Status: VERIFIED DUPLICATE of bug 122866

(Core :: Security: CAPS, defect)

Description

[Jamie Wilmoth]

User-Agent:       Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.3) Gecko/20030303
Build Identifier: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.3) Gecko/20030303

When viewing a web page that uses a blocked JavaScript function like
Window.focus(), it generates an error (in the JavaScript console) and stops the
remainder of the script from executing.  For pages that generate the content of
the page via script after that point, it means that content is not displayed,
even though there is no reason the script could not be allowed to continue.

This happens to me using an 'ensim' web hosting control panel.  When you perform
a function it has a 'details' link (for information such as errors that
occured).  Clicking that pops up a window, does a Window.focus(), then writes
the details.

Blocked critical JavaScript commands such as Window.open() do need to produce
and error and stop execution since there is no window to perform further actions
on.  But functions that only have cosmetic effect (focus, blur, resizing,
moving) should allow the script to continue (with a possible warning displayed
in the console).

I can't give a url since it's a password limited page, but could produce a
sample page of my own if needed.  But I think the concept should be fairly
straight forward, and hopefully minor to adjust for.


Reproducible: Always

Steps to Reproduce:
1. Disable JavaScripts from "Raise or lower windows" in prefs.
2. View a page that tries to Window.focus() before writting its output.

Actual Results:  
The page was blank.

Expected Results:  
The page should have displayed the details written by the script after the
Window.focus() command.

Comment 1

[Boris Zbarsky [:bzbarsky]]

*** This bug has been marked as a duplicate of 122866 ***

Comment 2

[Charles Rosendahl]

v