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Vue生命周期 #59

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Liqiuyue9597 opened this issue Sep 17, 2020 · 0 comments
Open

Vue生命周期 #59

Liqiuyue9597 opened this issue Sep 17, 2020 · 0 comments
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Vue 京东 小米 美团

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@Liqiuyue9597
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详细讲一下生命周期 --> 主要的区别在created和mounted。

  1. breforeCreated:在当前阶段data/methods/computed以及watch上的数据都不能被访问。
  2. created:vue实例创建完成，可以使用和更该数据，但是更改数据不会触发updated。当前阶段无法与DOM交互，如果非要交互用$nextTick。
  3. mounted:此时真实的DOM已经挂载完毕，数据也完成双向绑定，可以访问DOM节点，可以使用$ref属性对DOM进行操作。
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