< li> HTML中的标签有结尾标签？ [英] Does the <li> tag in HTML have an ending tag?

问题描述

因此，我在大学时学习了HTML中的列表，并且教授表示< li> 没有结束标记< / li> 以及其他一些标签，如< img> 和< br> 。这是否正确？因为我在最后看到很多使用标签的模板/主题，许多网站也告诉你< / li> 存在，所以我不知道该相信谁，以及使用< li> ？

的正确方法。为什么我问这是因为上次我们了解到< img> 标签，他说 alt =属性为您提供了一个显示在图片上的文本，当我在这里问他时，这只是替代破碎图片的文本，这也让我很想知道这一点。 p>



谢谢。 li 元素有一个结束标记（< / li> ），但它是optio nal ：

lockquote
li 元素的结束标签可能如果 li 元素之后紧跟着另一个 li 元素，或者父元素中没有更多内容。





So, I was learning about lists in HTML at college and the professor said <li> doesn't have an ending tag </li> along with some other tags like <img> and <br>. Is that correct or not? Because I've seen a lot of templates / themes using tag at the end, as well many sites also teach you that </li> exists, so I'm not sure whom to believe and what is correct way of using <li>?

The reason why I'm asking this is because last time we learned about <img> tag, he said that the alt="" attribute gives you a text displayed over the image when you hover the mouse, which turned it's only alternative text for broken images when I asked here and he was wrong for that case, which also made me wonder this as well.

Thanks.

解决方案

The li element has an end tag (</li>), but it’s optional in some cases:

An li element's end tag may be omitted if the li element is immediately followed by another li element or if there is no more content in the parent element.

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