Object.prototype._proto_ Points to the object which was used as prototype when the object was instantiated. Properties Specifies the function that creates an object's prototype. This provides a very powerful although potentially dangerous mechanism to override or extend object behavior. For example, other constructors' prototypes override the constructor property and provide their own toString() methods.Ĭhanges to the Object prototype object are seen by all objects through prototype chaining, unless the properties and methods subject to those changes are overridden further along the prototype chain. All objects in JavaScript are descended from Object all objects inherit methods and properties from Object.prototype, although they may be overridden (except an Object with a null prototype, i.e.
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