对多个 HTML 标签使用相同的 ID?

时间：2022-10-19

本文介绍了对多个 HTML 标签使用相同的 ID?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着跟版网的小编来一起学习吧！

问题描述

可能重复:
多个具有相同ID的元素响应一个 CSS ID 选择器

下面是我正在测试的示例代码，我很困惑.每个人都说我们可以使用或者我们应该每个 id 只使用一次，但我有测试使用它多次但它给了我正确的输出.

Below is the example code that I was testing and I got confused. Every one says that we can use or we should use only one time per id, but I have testes using using it multiple times but its giving me the correct output.

我该怎么办?

在这个例子中，它有点像我的类

It's kinda working same like class for me in this example

代码:

<html>
<head>
<style>

#exampleID1 { background-color: blue; } 
#exampleID2 { text-transform: uppercase; } 

</style>
</head>
<body>
<p id="exampleID1">This paragraph has an ID name of "exampleID1" and has a blue CSS defined background.</p>
<p id="exampleID2">This paragraph has an ID name of "exampleID2" and has had its text transformed to uppercase letters.</p>

<address id="exampleID1">

Written by W3Schools.com<br />
<a href="mailto:us@example.org">Email us</a><br />
Address: Box 564, Disneyland<br />
Phone: +12 34 56 78
</address>


<blockquote id="exampleID1">
Here is a long quotation here is a long quotation here is a long quotation here is a long quotation here is a long quotation here is a long quotation here is a long quotation here is a long quotation here is a long quotation.
</blockquote>

</body>
</html>

请查看上面的代码并回答我为什么我们不应该在一个页面中使用两次 id 选择器而它工作正常.

Please see the above code and answer me that why we should not use id selector two times in a page while its working fine.

对多个 HTML 标签使用相同的 ID?

问题描述

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