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有位同学在面试的时候被问到：“MutationObserver 和 IntersectionObserver 的差异以及作用场景”。所以，咱们今天就把这块给大家统一解释一下！ Hello，大家好，我是 Sunday。 有位同学在面试的时候被问到：“MutationObserver 和 IntersectionObserver 的差异以及作用场景”。

MutationObserver 的优点在于它可以捕获多种类型的 DOM 变化，包括元素的添加、删除、属性更改、文本内容变化等，而不需要显式地监听每一种变化类型，这意味着它更灵活、更可靠，并且可以适应各种应用场景。 MutationObserver 是用于监视 DOM 树内的特定节点的 Web ...

I use MutationObserver in one component. It seems Jest doesn't know about this ES feature. I found some documention on Jest website about babel-jest to use preset for ...

I am seeing issues with this polyfill in IE11, which appear to be caused by the MutationObserver instance. I haven't been able to create an isolated reproduction, but when the issue occurs the entire ...