[Webkit-unassigned] [Bug 226972] CSSStyleDeclaration.overscrollBehaviorX setter behaves differently from Chrome and Firefox

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=226972

--- Comment #4 from Sam Weinig <sam at webkit.org> ---
Oh, actually, this is probably due to OverscrollBehaviorEnabled being disabled, in which case this is behaving correctly.

If OverscrollBehaviorEnabled is disable, the property case behaves as if there is nothing called obj.overscrollBehaviorX, so just the same as obj.fakeProperty = 1 would. It sets an "expando" / custom property on the object.

If OverscrollBehaviorEnabled is enabled, this will throw, as the property exists and is readonly due to the declaration being a computed style.


My guess is that chrome and Firefox have support for overscroll-behavior-x enabled by default.

I think this is behaves correctly.

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