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tsejx merged 1 commit into from
Aug 27, 2025
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docs: fix typo #31

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4 changes: 2 additions & 2 deletions docs/browser-object-model/observer/mutation-observer.md
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Expand Up @@ -13,11 +13,11 @@ order: 2

MutationObservr API 用于监视 DOM 的任何变动，比如节点的增减、属性的变动、文本内容的变动，这个 API 都可以得到通知。

DOM 发生变动都会触发 Mutation Observer 事件。但是，它跟事件还是有不同点：事件是同步触发的，DOM 变化立即触发相应的事件；Mutation Observer 是一部触发，DOM 变化不会马上触发，而是等当前所有 DOM 操作都结束后才触发。
DOM 发生变动都会触发 Mutation Observer 事件。但是，它跟事件还是有不同点：事件是同步触发的，DOM 变化立即触发相应的事件；Mutation Observer 是异步触发，DOM 变化不会马上触发，而是等当前所有 DOM 操作都结束后才触发。

总的来说，特点如下：

- 它等待所有脚本任务完成后，才会运行（即一步触发方式）
- 它等待所有脚本任务完成后，才会运行（即异步触发方式）
- 它把 DOM 变动记录封装成一个数组进行处理，而不是一条条个别处理 DOM 变动
- 它既可以观察 DOM 的所有类型变动，也可以指定只观察某类变动

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