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getDerivedStateFromProps 返回null 仍然会触发render #4783

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j5465 opened this issue Nov 7, 2019 · 2 comments
Closed

getDerivedStateFromProps 返回null 仍然会触发render #4783

j5465 opened this issue Nov 7, 2019 · 2 comments

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@j5465
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j5465 commented Nov 7, 2019

问题描述
getDerivedStateFromProps 返回null 仍然会触发render
@taro-bot
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taro-bot bot commented Nov 7, 2019

欢迎提交 Issue~

如果你提交的是 bug 报告，请务必遵循 Issue 模板的规范，尽量用简洁的语言描述你的问题，最好能提供一个稳定简单的复现。🙏🙏🙏

如果你的信息提供过于模糊或不足，或者已经其他 issue 已经存在相关内容，你的 issue 有可能会被关闭。

Good luck and happy coding~

@j5465
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j5465 commented Nov 7, 2019 •
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文档里的

它应返回一个对象来更新 state，如果返回 null 则不更新任何内容。

意思是返回null 不更新 state ， 但仍然会重新render

@j5465 j5465 closed this as completed Nov 7, 2019
@taro-bot taro-bot bot mentioned this issue Nov 9, 2019
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