docs(cn): translate content/docs/legacy-context.md into Chinese #370
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content/docs/legacy-context.md
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| Function components are also able to reference `context` if `contextTypes` is defined as a property of the function. The following code shows a `Button` component written as a function component. | ||
| 只要 `contextTypes` 被定义为函数的一个属性，函数组件也能够引用 `context`。下面的代码展示了一个函数组件写法的 `Button` 组件。 | ||
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content/docs/legacy-context.md
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| @@ -214,4 +216,4 @@ MediaQuery.childContextTypes = { | |||
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| The problem is, if a context value provided by component changes, descendants that use that value won't update if an intermediate parent returns `false` from `shouldComponentUpdate`. This is totally out of control of the components using context, so there's basically no way to reliably update the context. [This blog post](https://medium.com/@mweststrate/how-to-safely-use-react-context-b7e343eff076) has a good explanation of why this is a problem and how you might get around it. | |||
| 问题是，如果组件提供的一个 context 发生了变化，而中间父组件的 `shouldComponentUpdate` 返回 `false`，那么使用到该值的后代组件不会进行更新。使用了 context 的组件则完全失控，所以基本上没有办法能够可靠的更新 context。[这篇博客文章](https://medium.com/@mweststrate/how-to-safely-use-react-context-b7e343eff076)很好地解释了为什么这是一个问题，以及你该如何规避它。 | |||
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| 问题是，如果组件提供的一个 context 发生了变化，而中间父组件的 `shouldComponentUpdate` 返回 `false`，那么使用到该值的后代组件不会进行更新。使用了 context 的组件则完全失控，所以基本上没有办法能够可靠的更新 context。[这篇博客文章](https://medium.com/@mweststrate/how-to-safely-use-react-context-b7e343eff076)很好地解释了为什么这是一个问题，以及你该如何规避它。 | |
| 问题是，如果组件提供的一个 context 发生了变化，而中间父组件的 `shouldComponentUpdate` 返回 `false`，那么使用到该值的后代组件不会进行更新。使用了 context 的组件则完全失控，所以基本上没有办法能够可靠的更新 context。[这篇博客文章](https://medium.com/@mweststrate/how-to-safely-use-react-context-b7e343eff076)很好地解释了为何会出现此类问题，以及你该如何规避它。 |
content/docs/legacy-context.md
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| React has an API to update context, but it is fundamentally broken and you should not use it. | ||
| React 有一个 API 可以更新 context，但它基本上是坏的，你不应该使用它。 |
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| React 有一个 API 可以更新 context，但它基本上是坏的，你不应该使用它。 | |
| React 有一个 API 可以更新 context，但它基本上是不靠谱的，你不应该使用它。 |
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@yes1am 修改下，大体没啥问题 |
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translate content/docs/legacy-context.md into Chinese