Bug 103423 – Calling document.createEvent("TrackEvent") should throw a NOT_SUPPORTED_ERR error.

• Status: RESOLVED
• Resolution: DUPLICATE
• Component: DOM

[Antoine Quint]

We're failing the Opera-submitted test at http://w3c-test.org/html/tests/submission/Opera/media/interfaces/TrackEvent/createEvent.html.

We fail to throw the NOT_SUPPORTED_ERR error when calling document.createEvent('TrackEvent'). I believe this is a broader WebCore issue that we don't follow the latest DOM spec that this method should only be used for legacy events. See http://dom.spec.whatwg.org/#dom-document-createevent.

[Radar WebKit Bug Importer]

<rdar://problem/12758230>

[Adam Barth]

http://dom.spec.whatwg.org/#dom-document-createevent says that we should be able to create any sort of supported event via this API.

[Ian 'Hixie' Hickson]

Adam, I think you're misreading the algorithm. (Though I don't really understand why it's specced that way.)

[Adam Barth]

Ah, yes.  Thanks.  That's quite different from the behavior we have currently.

[Chris Rebert]

Still not spec compliant.
Relevant, more general DOM testcase: http://w3c-test.org/dom/nodes/Document-createEvent.html

[Chris Rebert]

Corresponding Chrome bug: https://bugs.chromium.org/p/chromium/issues/detail?id=569690

[Lucas Forschler]

Mass move bugs into the DOM component.

[Ahmad Saleem]

If I go by TextTrack - https://wpt.fyi/results/html/semantics/embedded-content/media-elements/interfaces/TrackEvent/createEvent.html?label=master&label=experimental&aligned=&q=createevent

^ Safari Technology Preview 180 is passing above.

If I go by 'DOM', we have following now on WPT:

https://wpt.fyi/results/dom?label=master&label=experimental&aligned=&q=createevent

^ In above, Safari / WebKit is still failing few test cases.

[Anne van Kesteren]

This particular instance was fixed at the end of 2015 by Darin.

*** This bug has been marked as a duplicate of bug 151931 ***