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How can we make methods available on all objects

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How can we make methods available on all objects?

Answer & Solution
Correct Answer: Option D
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 nonenumerable, and if you add properties to Object.prototype, those properties will be reported by all for/in loops.
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