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skeep/object-methods-3.js

Created December 25, 2014 17:36
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object-methods-3.js
var a = [1,2,3];
Object.keys(a);
//returns ["0", "1", "2"]
Object.getOwnPropertyNames(a)
//returns ["0", "1", "2", "length"]
a.propertyIsEnumerable(0); // returns true
a.propertyIsEnumerable('length'); // returns false
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