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  4. accesskey

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accesskey global attribute provides a hint for generating a keyboard shortcut for the current element. The attribute value must consist of a single printable character (which includes accented and other characters that can be generated by the keyboard).

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

注意 : In the WHATWG spec, it says you can specify multiple space-separated characters, and the browser will use the first one it supports. However, this does not work in most browsers. IE/Edge uses the first one it supports without problems, provided there are no conflicts with other commands.

The way to activate the accesskey depends on the browser and its platform:

Windows Linux Mac
Firefox Alt + Shift + key On Firefox 57 or newer: Control + 选项 + key or Control + Alt + key
On Firefox 14 or newer: Control + Alt + key
On Firefox 13 or older: Control + key
Internet Explorer Alt + key
Alt + Shift + key 		N/A
Edge N/A Control + 选项 + key
Control + 选项 + Shift + key
Google Chrome Alt + Shift + key
Safari N/A
Opera 15+ Alt + key Control + Alt + key
Opera 12 Shift + Esc opens a contents list which are accessible by accesskey, then, can choose an item by pressing key

可访问性关注

In addition to poor browser support, there are numerous concerns with the accesskey 属性：

  • An accesskey value can conflict with a system or browser keyboard shortcut, or assistive technology functionality. What may work for one combination of operating system, assistive technology, and browser may not work with other combinations.
  • Certain accesskey values may not be present on certain keyboards, especially when internationalization is a concern. So adapting to specific languages could cause further problems.
  • accesskey values that rely on numbers may be confusing to individuals experiencing cognitive concerns, where the number doesn't have a logical association with the functionality it triggers.
  • Informing the user that accesskey s are present, so that they are aware of the functionality. If the system lacks a method of notifying the user about this feature, the user might accidentally activate accesskey 。

Because of these issues, it is generally advised not to use accesskey s for most general-purpose websites and web apps.

规范

规范 状态 注释
HTML 5.2
The definition of 'accesskey' in that specification. 		推荐 More realistic behavior described for what is implemented in reality.
HTML 实时标准
The definition of 'accesskey' in that specification. 		实时标准 No change from latest W3C HTML 5.1 spec.
HTML 5.1
The definition of 'accesskey' in that specification. 		推荐 无变化自 HTML5 .
HTML5
The definition of 'accesskey' in that specification. 		推荐 从 HTML 4.01 Specification , several characters can now be set as the accesskey . Also, it can be set on any element.
HTML 4.01 Specification
The definition of 'accesskey' in that specification. 		推荐 Only supported on <a> , <area> , <button> , <input> , <label> , <legend> and <textarea>

浏览器兼容性

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据
桌面 移动
Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
accesskey Chrome 完整支持 Yes Edge 完整支持 12 Firefox 完整支持 Yes IE 完整支持 Yes Opera 完整支持 Yes Safari 完整支持 Yes WebView Android 完整支持 Yes Chrome Android 完整支持 Yes Firefox Android 完整支持 Yes Opera Android 完整支持 Yes Safari iOS 完整支持 Yes Samsung Internet Android 完整支持 Yes

图例

完整支持

完整支持

另请参阅

元数据

  • 最后修改：
  1. HTML
  2. 教程：
  3. HTML 基础
  4. HTML 介绍
    1. Introduction to HTML overview
    2. Getting started with HTML
    3. What's in the head? Metadata in HTML
    4. HTML text fundamentals
    5. Creating hyperlinks
    6. Advanced text formatting
    7. Document and website structure
    8. Debugging HTML
    9. Assessment: Marking up a letter
    10. Assessment: Structuring a page of content
  5. 多媒体和嵌入
    1. Multimedia and embedding overview
    2. Images in HTML
    3. Video and audio content
    4. From object to iframe — other embedding technologies
    5. Adding vector graphics to the Web
    6. Responsive images
    7. Assessment: Mozilla splash page
  6. 参考：
  7. HTML 元素
    1. <a>
    2. <abbr>
    3. <acronym>
    4. <address>
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  8. 全局属性
    1. accesskey
    2. autocapitalize
    3. class
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    6. data-*
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    25. title
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    27. x-ms-acceleratorkey
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  9. <input> 类型
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