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问题描述

我似乎想起以前版本的HTML(在HTML5之前)所需的属性中的大多数(也许是全部)属性具有值,如 readonly =readonly p>

这对HTML5和 autofocus 属性是否正确?

解决方案

在HTML中,您可以根据需要使用带或不带值的布尔属性。
对于W3C来说,像自动对焦一样的布尔值可以像 autofocus autofocus =autofocus autofocus =



如果您不想自动对焦,请不要写下它。 / p>

我认为你很困惑,因为XHTML需要所有属性的值: attributes =values



以下是关于HTML中布尔属性使用的一些信息:


I seem to recall most (maybe all) attributes in previously versions of HTML (before HTML5) required attributes to have values, like readonly="readonly".

Is this true for HTML5 and the autofocus attribute?

解决方案

In HTML, you use boolean attributes with or without values as you like.A boolean, for W3C, like autofocus can be written like that autofocus or autofocus="autofocus" or also autofocus="".

If you don't want autofocus just don't write it.

I think you are confused because XHTML requires values for all attributes: attributes="values".

Here is some information about boolean attribute use in HTML:http://www.whatwg.org/specs/web-apps/current-work/multipage/common-microsyntaxes.html#boolean-attribute

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09-15 10:01