[Webkit-unassigned] [Bug 162897] New: Return null when window.open() is popup blocked

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=162897

            Bug ID: 162897
           Summary: Return null when window.open() is popup blocked
    Classification: Unclassified
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML DOM
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: zcorpan at gmail.com
                CC: cdumez at apple.com

The return value of window.open() when the popup is blocked should be null.

WebKit/Chromium return undefined.
Gecko/Edge 13 return null.

See
https://github.com/whatwg/html/pull/1854
https://github.com/whatwg/html/issues/1851

Test
http://software.hixie.ch/utilities/js/live-dom-viewer/saved/4541

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