Array.prototype.contains

Erik Arvidsson erik.arvidsson at gmail.com
Fri Feb 24 11:18:04 PST 2012


On Fri, Feb 24, 2012 at 11:09, Rick Waldron <waldron.rick at gmail.com> wrote:
>
>
> On Thu, Feb 23, 2012 at 3:15 PM, Erik Arvidsson <erik.arvidsson at gmail.com>
> wrote:
>>
>> DOM4 added a new interface called DOMStringList for the sole reason
>> that Array does not have contains. Before this the return type was an
>> Array of Strings so we could use indexOf, map, forEach etc. Now that
>> it is using a non Array we lost all of that.
>
>
> Wouldn't the return type (or [[Class]]) still be restricted from using
> "Array"?

No. We (WebKit) used to return a true JS Array (created by JSC or V8).

-- 
erik


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