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Prototype chain of History object?

原文 2013-01-11 16:04:21 6 1 javascript

Which one is correct?

Chrome returns false

Object.getPrototypeOf(Object.getPrototypeOf(history)) === Object.prototype
false

Fireforx return true

Object.getPrototypeOf(Object.getPrototypeOf(history)) === Object.prototype
true

1 answers

Both.

The specification doesn't precise the type of the object or how the browser creates it, but only an interface.

Is Object the highest in the prototype chain?

Why is there an extra prototype in this object's prototype chain?

JavaScript Prototype Chain Reference to Object.prototype

Navigating prototype chain to Object.prototype

object.prototype===object.fn history

getting name of object part of prototype chain

Prototype chain using Object.assign and descriptors

Idiom to get just the “own object” and not the prototype chain

Object class comes twice in prototype chain of DOMWindow?

Using Object.create() to develop a prototype chain

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Related Question Is Object the highest in the prototype chain? Why is there an extra prototype in this object's prototype chain? JavaScript Prototype Chain Reference to Object.prototype Navigating prototype chain to Object.prototype object.prototype===object.fn history getting name of object part of prototype chain Prototype chain using Object.assign and descriptors Idiom to get just the “own object” and not the prototype chain Object class comes twice in prototype chain of DOMWindow? Using Object.create() to develop a prototype chain

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