accesskey 全局属性提供了能为当前元素生成快捷键的方式。这个属性是由空格分隔的字符（单个 Unicode 代码点）列表组成。浏览器使用存在于计算机键盘布局的第一个字符。
激活 accesskey 的操作取决于浏览器及其平台。
| Windows | Linux | Mac | |
|---|---|---|---|
| Firefox | Alt + Shift + key | On Firefox 14 or newer, Control + Alt + key On Firefox 13 or older, Control + key |
|
| Internet Explorer | Alt + key | N/A | |
| Google Chrome | Alt + key | Control + Alt + key | |
| Safari | Alt + key | N/A | Control + Alt + key |
| Opera | Shift + Esc opens a contents list which are accessible by accesskey, then, can choose an item by pressing key | ||
要注意 Firefox 可以通过用户偏好，自定义所需的修饰键。
规范
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard accesskey |
Living Standard | No change from latest snapshot, HTML 5.1 |
| HTML 5.1 accesskey |
Recommendation | Snapshot of HTML Living Standard, no change from HTML5 |
| HTML5 accesskey |
Recommendation | Snapshot of HTML Living Standard. From HTML 4.01 Specification, several characters can be set as the accesskey. Also, it can be set on any element. |
| HTML 4.01 Specification accesskey |
Recommendation | Only supported on <a>, <area>, <button>, <input>, <label>, <legend> and <textarea> |
浏览器兼容性
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |