面向對象相關測試題目

你的JS面向對象真的很厲害麼？那麼請說出下面這些屬性分別輸出什麼？

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• Object.prototype.constructor

• Object.prototype.prototype

• Object.prototype.__proto__

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• Object.constructor.prototype

• Object.constructor.constructor

• Object.constructor.__proto__

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• Object.__proto__.constructor

• Object.__proto__.prototype

• Object.__proto__.__proto__

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• Function.prototype.constructor

• Function.prototype.prototype

• Function.prototype.__proto__

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• Function.constructor.prototype

• Function.constructor.constructor

• Function.constructor.__proto__

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• Function.__proto__.constructor

• Function.__proto__.prototype

• Function.__proto__.__proto__

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function Cat() {};

• Cat.prototype

• Cat.prototype.constructor

• Cat.prototype.__proto__

• Cat.__proto__

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var cat = new Cat();

• cat.constructor

• cat.__proto__

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var o = {};

• o.constructor

• o.prototype

• o.__proto__

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