Array Like Objects in Javascript

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The object has to have length and splice

> var x = {length:2, '0':'foo', '1':'bar', splice:function(){}}
> console.log(x);
['foo', 'bar']

and FYI, the Object[0] as the prototype is for exactly the same reason. The browser is seeing the prototype itself as an array because:

$.prototype.length == 0;
$.prototype.splice == [].splice;

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