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Possible Duplicate:
Length of Javascript Associative Array
hash_table = {a: 131, b: 222, c:313}
The length method is not working of course since it will be confused with a key.
So how do I do it?
Object.keyswill return all the keys in the object as a list, then use length to get the length.example:
NOTE that this is ECMA 5 and may not be available in some browsers. see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Object/keys for full document.