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Merge pull request #284 from ifishing/gh-pages

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修正一个“类的实例对象”节 的错误：“它们的原型都是Point”
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Ruan YiFeng 2016-11-24 16:05:13 +08:00 committed by GitHub
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@ -266,7 +266,7 @@ p1.__proto__ === p2.__proto__
//true
```
上面代码中，`p1`和`p2`都是Point的实例，它们的原型都是Point，所以`__proto__`属性是相等的。
上面代码中，`p1`和`p2`都是Point的实例，它们的原型都是Point.prototype，所以`__proto__`属性是相等的。
这也意味着，可以通过实例的`__proto__`属性为Class添加方法。