Copy the original element into an off-document node, modify the copy, and then replace the original element once you're done.

将原始元素拷贝到一个脱离文档的节点中，修改副本，然后覆盖原始元素。

youdao

Copy the original element into an off-document node, modify the copy, and then replace the original element once you're done.

将原始元素拷贝到一个脱离文档的节点中，修改副本，然后覆盖原始元素。

youdao