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List:       konq-bugs
Subject:    [konqueror] [Bug 375999] New: [test case] form siblings bug afecting all jquery 3 web sites
From:       Anguo <bugzilla_noreply () kde ! org>
Date:       2017-02-04 13:31:10
Message-ID: bug-375999-5021 () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=375999

            Bug ID: 375999
           Summary: [test case] form siblings bug afecting all jquery 3
                    web sites
           Product: konqueror
           Version: 5.0.97
          Platform: Gentoo Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: NOR
         Component: kjs
          Assignee: konq-bugs@kde.org
          Reporter: kde_bugs@overshoot.tv
  Target Milestone: ---

Created attachment 103819
  --> https://bugs.kde.org/attachment.cgi?id=103819&action=edit
Failing this simple test case prevents jquery 3 from working in konqueror

I was trying to debug why one web site using jquery 3 was working in every
browser I tried but in konqueror. 
As I tried to narrow down the problem,  I found that jquery 3 contains the
following code, which, if removed, fixed the symptoms in konqueror:


// Support: Safari 8 only
// In Safari 8 documents created via document.implementation.createHTMLDocument
// collapse sibling forms: the second one becomes a child of the first one.
// Because of that, this security measure has to be disabled in Safari 8.
// https://bugs.webkit.org/show_bug.cgi?id=137337
support.createHTMLDocument = ( function() {                                     
        var body = document.implementation.createHTMLDocument( "" ).body;
        body.innerHTML = "<form></form><form></form>";
        return body.childNodes.length === 2;
} )();


Following the webkit bug report referred in the jquery code, I found the test
case which I attach here. 
Today, the test case works in Firefox, etc, but does not render anything in
Konqueror.

This is a pretty major bug: I don't need to tell you how many web sites out
there use jquery. I don't know if the symptomatic code is in jquery 2, but it
certainly is in jquery 3, which is gaining wide adoption. And as I said, I
found this while trying to find out why a web site using jquery was broken and
unusable in konqueror.

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