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How can we make methods available on all objects?(a) Object.add(methods)(b) Object.methods(add)(c) Object.add.methods(…)(d) Object.prototype |
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Answer» Right choice is (d) Object.prototype Easiest explanation: It is possible to add methods to Object.prototype, making them available on all objects. This is not recommended, however, because prior to ECMAScript5, there is no way to make these add-on methods non enumerable, and if you add properties to Object.prototype, those properties will be reported by all for/in loops. |
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