[Webkit-unassigned] [Bug 98438] New: MutationRecord attributeName should be null for non attribute changes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=98438

           Summary: MutationRecord attributeName should be null for non
                    attribute changes
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: arv at chromium.org
                CC: rafaelw at chromium.org, adamk at chromium.org


We return '' instead of null for atributeName when the type is characterData (I didn't try childNodes but I assume we have the same issue there and other places).

Steps to reproduce

var text = document.createTextNode('abc');
var observer = new WebKitMutationObserver(function() {});
observer.observe(text, {
  characterData: true
});
text.data = 'def';

var records = observer.takeRecords();
shouldBeNull('record[0].attributeName');

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