HTML 5类名和ID [英] HTML 5 classnames and IDs

问题描述

我知道在HTML4类和id不能以数字开头。

I know that in HTML4 classes and id cannot start with numbers.

我编码在HTML 5 / php和许多我的id和类只有数字他们指向我的数据库中的主键为jquery ajax调用。

I am coding in HTML 5/php and alot of my ids and classes have just numbers in them that point to a primary key in my database for jquery ajax calls.

我找不到HTML5类和id规范的文档。在HTML 5中是否有类和id名称，例如

I cannot find the documentation for HTML5 classes and id spec. Is it valid in HTML 5 to have class and id names such as,

class="122"
id="13213"

我通过w3c一致性检查器运行我的输出代码，一切都很好，

I have ran my output code through w3c conformance checker and all is good, but still I would like confirmation!?

感谢

推荐答案

并详细描述了我的发现： id attribute has more class y in HTML5 。从那篇文章：

I’ve researched this thoroughly and wrote about my findings: The id attribute got more classy in HTML5. From that article:

HTML5摆脱了对 id 属性。除了在文档中是唯一的之外，唯一的要求是该值必须包含至少一个字符（不能为空），并且不能包含任何空格字符。

HTML5 gets rid of the additional restrictions on the id attribute. The only requirements left — apart from being unique in the document — are that the value must contain at least one character (can’t be empty), and that it can’t contain any space characters.

要使用Selectors API定位以CSS或JavaScript中的数字开头的类名或ID，您应该转义。例如，要定位 id =404的元素，您不能只使用＃404 - 您'd have to escape it as follows ：

To target a classname or ID that starts with a digit in CSS or in JavaScript using the Selectors API, you should escape them. For example, to target the element with id="404", you can’t just use #404 — you’d have to escape it as follows:

#\34 04 {
  background: pink;
}

这篇关于HTML 5类名和ID的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！