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有没有现成的方法遍历DOM树某节点下的所有子节点？

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有没有现成的方法遍历DOM树某节点下的所有子节点？

例如JQ的.find()和.children()
有没有原生方法或者react方法


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by (71.8m points)

当然。querySelector和querySelectorAll了解一下


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