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The MouseEvent.ctrlKey
read-only property returns a Boolean
that indicates if the control key was pressed (true
) or not (false
) when the event occured.
语法
var ctrlKeyPressed = instanceOfMouseEvent.ctrlKey
返回值
A boolean
示例
<html> <head> <title>ctrlKey example</title> <script type="text/javascript"> function showChar(e){ alert( "Key Pressed: " + String.fromCharCode(e.charCode) + "\n" + "charCode: " + e.charCode + "\n" + "CTRL key pressed: " + e.ctrlKey + "\n" ); } </script> </head> <body onkeypress="showChar(event);"> <p>Press any character key, with or without holding down the CTRL key.<br /> You can also use the SHIFT key together with the CTRL key.</p> </body> </html>
规范
Specification | Status | Comment |
---|---|---|
Document Object Model (DOM) Level 3 Events Specification MouseEvent.ctrlKey |
Working Draft | No change from Document Object Model (DOM) Level 2 Events Specification. |
Document Object Model (DOM) Level 2 Events Specification MouseEvent.ctrlKey |
Recommendation | Initial definition. |
浏览器兼容性
Feature | Firefox (Gecko) | Chrome | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
Feature | Firefox Mobile (Gecko) | Android | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | ? | ? | ? | ? | ? |