[Webkit-unassigned] [Bug 246899] New: DOM api document.adoptNode doesn't assign ownerDocument correctly

Fri Oct 21 23:36:46 PDT 2022

https://bugs.webkit.org/show_bug.cgi?id=246899

            Bug ID: 246899
           Summary: DOM api document.adoptNode doesn't assign
                    ownerDocument correctly
           Product: WebKit
           Version: Safari 16
          Hardware: All
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: DOM
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: huocp at me.com

Safari 16+ (including 16.1 beta and Safari Technology Preview) seems didn't assign ownerDocument correctly in DOM api document.adoptNode.
Reproducible on both mac and iPhone.

In Safari 16+ browser console, reproduce it with following code:
> const div = document.createElement('div')
div.innerHTML = '<template><p></p></template>';

const fragment = div.firstChild.content;
< "<template><p></p></template>"
> fragment.ownerDocument.documentElement
< null
> document.adoptNode(fragment);
< Document Fragment
> fragment.ownerDocument.documentElement
< null

In comparison, in other browser (Chrome, Firefox or older Safari), the ownerDocument is assigned after adoptNode.

> const div = document.createElement('div')
div.innerHTML = '<template><p></p></template>';

const fragment = div.firstChild.content;
< '<template><p></p></template>'
> fragment.ownerDocument.documentElement
< null
> document.adoptNode(fragment);
< #document-fragment
> fragment.ownerDocument.documentElement
< <html ...>

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