Internet Explorer does not include _proto_. Returns the primitive value of the specified object.Ĭhrome and Firefox denotes object's prototype as _proto_ which is public link whereas internally it reference as ]. Returns a boolean that indicates whether the specified property is enumerable or not. Returns a boolean indication whether the specified object is in the prototype chain of the object this method is called upon. Returns a boolean indicating whether an object contains the specified property as a direct property of that object and not inherited through the prototype chain.
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