是否可以使用?-Canaspanbeclosedusing?

40  

Whether or not this is valid depends on your doctype, basically whether or not you're using XHTML or HTML.

这是否有效取决于您的doctype，主要是您是否使用XHTML或HTML。

When using XHTML, all major browsers will support self closing tags like the example you provided. Take the following example, this is valid because I'm specifying the page is using XHTML (in other words, HTML that is valid XML).

当使用XHTML时，所有主要浏览器都将支持自关闭标记，如您提供的示例。以下面的示例为例，这是有效的，因为我指定页面正在使用XHTML(换句话说，HTML是有效的XML)。

Update: Based on the very good comments below, browsers will only interpret all self closing tags correctly if the mime type is text/xml or application/xhtml+xml, see here for the details. For pages served as text/html (the vast majority), see here here for the tags that can be self closing.

更新:基于下面非常好的注释，如果mime类型是文本/xml或应用程序/xhtml+xml，浏览器只会正确地解释所有自闭标记，详情请参见这里。对于用作文本/html(绝大多数)的页面，请参阅这里的标签，这些标签可以自动关闭。

This example will validate:

这个例子将验证:

    


    
Will test page
    
some stuff 

However, this example is not valid, because I've switched the doctype to HTML:

但是，这个示例无效，因为我将doctype切换为HTML:

    


    
Will test page
    
some stuff 

A few helpful references:

一些有用的参考:

• W3C Validator
• W3C验证器
• XHTML vs HTML
• XHTML和HTML

12  

No, this isn't supported by all browsers.
Here's an example with divs: http://jsbin.com/upovu

不，这不是所有浏览器都支持的。这里有一个divs的例子:http://jsbin.com/upovu

1  

Testing the following fragment on validator.w3.org:

在validator.w3.org上测试以下片段:

Validating as HTML 4.01 Strict

验证为HTML 4.01严格

# end tag for "SPAN" omitted, but its declaration does not permit this

Validating as XHTML 1.0 Strict

严格地验证XHTML 1.0

# The uploaded document was successfully checked as XHTML 1.0 Strict.

0  

Since the tag provides no visual change by itself, it doesn't make sense to me to have an auto-closing span block with no content. The tag provides a way to add a hook to a part of a text or a part of a document. When the text is hooked in a span element you can add styles to the content, or manipulate the content with for example Javascript.

由于标签本身不提供任何视觉上的改变，所以我认为没有内容的自动关闭跨度块是没有意义的。标签提供了一种方法，可以向文本的一部分或文档的一部分添加钩子。当文本被钩入span元素时，您可以向内容添加样式，或者使用例如Javascript操作内容。

However, to answer your question, yes the html code block posted is valid.

但是，要回答您的问题，所发布的html代码块是有效的。

0  

AS far as I know, this can only be used when you set the Doctype to Xhtml.

据我所知，这只能在将Doctype设置为Xhtml时使用。

0  

This is what the spec says for HTML 4.01 and for XHTML 1.0.

这是规范对HTML 4.01和XHTML 1.0的说明。

No, it's a container unlike an image or (deprecated) horizontal rule.

不，它是与图像或(已废弃的)水平规则不同的容器。

0  

Easiest way to check is using http://validator.w3.org/

最简单的检查方法是使用http://validator.w3.org/

And the answer is no.

答案是否定的。

0  

• In HTML: you cannot.
• 在HTML:你不能。
• In XHTML: you can.
• 在XHTML:可以。
• In HTML Compatible XHTML: you cannot.
• 在与HTML兼容的XHTML中:不能。

You must write HTML compatible XHTML if you wish to serve it as text/html, and you must serve it as text/html if you want it to work in IE <= 8.

如果希望将HTML作为文本/ HTML提供，则必须编写与HTML兼容的XHTML，如果希望在IE <= 8中使用，则必须将其作为文本/ HTML提供。

-1  

No http://www.w3schools.com/tags/tag_span.asp

没有http://www.w3schools.com/tags/tag_span.asp

The span tag is useful for hooking css onto a particular segment of text or part of a document. I can't think of any useful/sensible reason that a span tag would self close.

span标记对于将css连接到文本的特定部分或文档的一部分非常有用。我想不出任何有用的/合理的理由来解释span标记会自动关闭。

-1  

No, it's not. You can close like this ONLY if you can't insert in tag something For example: you can`t insert tag or text inside tag img, so you can close tag like this

不,它不是。只有当你不能在标签中插入一些东西时，你才可以这样关闭例如:你不能在标签img中插入标签或文本，所以你可以这样关闭标签