Example Analysis of reuse of multiple ID or ID in html

This article mainly introduces a number of html ID or ID reuse example analysis, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

This is actually a mistake, but encountered more than once or twice in the development, writing id all over the page, of course, reasonable id can be nested in the page to write, but try to write in the outermost layer.

The id attribute can only appear once in each HTML document.

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