is type =" text / css"必须在< link>标签？ [英] Is type="text/css" necessary in a <link> tag?
问题描述
我想知道是否需要使用< link rel =stylesheettype =text / csshref = ...> over < link rel =stylesheethref = ...> 。 rel =stylesheet标记了它是样式表的信息 - 因此 text / css
HTML使用的唯一样式表格式是CSS，因此 text / css 'say'到浏览器？有些网站似乎添加了 type =text / css属性（ http：// www .jquery.com / ），而其他则不会（ http://www.youtube.com/ ） 。
那么，在
HTML5规范并不要求这样做，但对于较旧版本的HTML则需要。
Html 4 W3.org规格 / p>
http ：//www.w3.org/TR/html40/struct/links.html#edef-LINK
http://www.w3.org/TR/html40/present/styles.html
类型代表样式表的MIME类型。我看到的唯一支持的值是Text / CSS，这可能是为什么HTML5已经删除它。我想象他们有它的早期版本允许未来的扩展可能性从来没有发生。
使用HTML5而不指定类型，我运行到目前为止没有兼容性问题即使测试旧版本的IE。
I was wondering whether or not it is necessary to use <link rel="stylesheet" type="text/css" href=...> over <link rel="stylesheet" href=...>. The rel="stylesheet" marks the information that it is a stylesheet - so text/css doesn't actually add anything as far as I'm concerned.
The only stylesheet format used by HTML is CSS anyway, so what does text/css 'say' to the browser? Some websites seem to add the type="text/css" attribute (http://www.jquery.com/), whilst other ones don't (http://www.youtube.com/).
So, what is the use of type="text/css" in a <link rel="stylesheet"> element, and is it necessary to include it?
It's not required with the HTML5 spec, but for older versions of HTML is it required.
Html 4 W3.org spec
http://www.w3.org/TR/html40/struct/links.html#edef-LINK http://www.w3.org/TR/html40/present/styles.html
Type stands for The MIME type of the style sheet. The only supported value I have ever seen is Text/CSS, which is probably why HTML5 has dropped it. I imagine they had it for earlier versions to allow future expansion possibilities which never happened.
Using HTML5 and not specifying the type, I have run so far into no problems with compatibility even when testing older versions of IE.
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