但通常不这样做，传入DOM文档元素，然后从这里开始编写表达式是最简单的办法。

More often than not, though, it's easiest to pass in the DOM document element and write your expressions from there.

youdao

bug What I typically do is I start with the input that provoked the problem, and I keep making it smaller and smaller.

我这里做的就是从引起,出现的输入开始，然后将输入，一步步的缩小规模。

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