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Update understand-prototype-__proto__.md #10

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4 changes: 2 additions & 2 deletions points/understand-prototype-__proto__.md
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Expand Up @@ -83,7 +83,7 @@
![2](http://angular.angular-china.org/cbe213bb-6f1e-4fc5-84d4-fa082bf50a89.jpg)
+ 接下来`var car = new Car('porsche')`这一行代码可不像它看起来那样,它内部的实现还是有许多值得玩味的;
首先,函数`Car`创建了一个新的对象(a),**这个对象有一个隐藏的属性`__proto__`,这个属性和`Car`的原型都指向同一个对象.**
然后`Car`函数内部的`this`指向哪个新创建的对象(a).如下图所示:
然后`Car`函数内部的`this`指向那个新创建的对象(a).如下图所示:
![3](http://angular.angular-china.org/6441a0ee-2acd-4667-82b7-8d8a7b57f188.jpg)
+ 然后我们给这个对象添加了一个属性`name`,并且为其赋值.**还要注意的一点是,我们这个`Car`函数是有返回值的,虽然没有使用`return`关键字
把这个值显式的返回**,这个返回值是一个引用,然后变量`car`就可以用来操作那个对象了(a).
Expand Down Expand Up @@ -147,4 +147,4 @@



[1]:http://pythontutor.com/visualize.html#code=console.log%28%7B%7D.__proto__%29;%0Aconsole.log%28%28function%28%29%7B%7D%29.prototype%29;&mode=display&origin=opt-frontend.js&cumulative=false&heapPrimitives=false&textReferences=false&py=js&rawInputLstJSON=%5B%5D&curInstr=2
[1]:http://pythontutor.com/visualize.html#code=console.log%28%7B%7D.__proto__%29;%0Aconsole.log%28%28function%28%29%7B%7D%29.prototype%29;&mode=display&origin=opt-frontend.js&cumulative=false&heapPrimitives=false&textReferences=false&py=js&rawInputLstJSON=%5B%5D&curInstr=2