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Update JS-ch.md
xsf0105 Jul 16, 2018
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Merge pull request #1 from khno/allan2coder-patch-1
xsf0105 Jul 16, 2018
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Expand Up @@ -938,7 +938,7 @@ Object.setPrototypeOf(MyData.prototype, Date.prototype)

首先说下前两者的区别。

`call` 和 `apply` 都是为了解决改变 `this` 的指向。作用都是相同的，只是传参的方式不同。
`call` 和 `apply` 都是为了解决改变 `this` 的指向。作用都是相同的，只是传参的方式不同。通俗来讲就是，a有xx方法，b没有。b可以问a借！

除了第一个参数外，`call` 可以接收一个参数列表，`apply` 只接受一个参数数组。

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