Array.prototype.lastIndexOf about es5-shim HOT 7 CLOSED

similar issue with "indexOf"

http://es5.github.com/#x15.4.4.14
step 8b
"if k is less than 0, then let k be 0"

test:

[1].indexOf(3, -1e10);

works very slowly with your implementation

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@Yaffle: fixed by b03315e

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without additions to test this fixes can be lost onse

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I went to add tests, but then thought... what do I test? It's only really an efficiency thing. I guess we could make array-like-objects with out-of-bounds indices and see if they're found? Can't do the same with real arrays, though, due to the dynamic (read: magic) nature of the length property.

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what abot calling [].indexOf with array-like object

var x = { length : 1, '-10000' : 'test');
[].indexOf.call(x, 'test', -10001)
?
or something

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Yeah, that's basically what I just suggested. Do you want to submit a patch or should someone else take care of it? I can't do it until at least later tonight.

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https://gist.github.com/1245607

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