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[vue] 49. 响应式系统的基本原理 #440

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qiilee opened this issue Oct 8, 2019 · 2 comments
Open

[vue] 49. 响应式系统的基本原理 #440

qiilee opened this issue Oct 8, 2019 · 2 comments
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@qiilee
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qiilee commented Oct 8, 2019 •
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答案：

vue响应式的原理，首先对象传入vue实例作为data对象时，首先被vue遍历所有属性，调用Object.defineProperty设置为getter和setter，每个组件都有一个watcher对象，在组件渲染的过程中，把相关的数据都注册成依赖，当数据发生setter变化时，会通知watcehr，从而更新相关联的组件
@qiilee qiilee added the VUE label Oct 8, 2019
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vue响应式的原理，首先对象传入vue实例作为data对象时，首先被vue遍历所有属性，调用Object.defineProperty设置为getter和setter，每个组件都有一个watcher对象，在组件渲染的过程中，把相关的数据都注册成依赖，当数据发生setter变化时，会通知watcehr，从而更新相关联的组件

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qiilee commented Nov 7, 2019

@zzdxsongjinlei 已采纳！

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