[Webkit-unassigned] [Bug 150443] New: <img>.naturalWidth should return the density-corrected intrinsic width

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Oct 22 03:39:04 PDT 2015


https://bugs.webkit.org/show_bug.cgi?id=150443

            Bug ID: 150443
           Summary: <img>.naturalWidth should return the density-corrected
                    intrinsic width
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Images
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: zcorpan at gmail.com

Consider

   <img srcset="http://placehold.it/240 2x" onload="alert(this.naturalWidth)">

Per spec it should alert 120. WebKit alerts 240. Gecko and Blink match the spec, I don't know about Edge.

https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-naturalwidth

I would recommend waiting with fixing this bug until .currentSrc is implemented, since exploiting this bug can be a poor man's .currentSrc; see http://stackoverflow.com/questions/33231426/get-the-currentsrc-of-responsive-image-on-safari/33278821

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