KeyboardEvent.ctrlKey - Web APIs 编辑
The KeyboardEvent.ctrlKey read-only property returns a Boolean that indicates if the control key was pressed (true) or not (false) when the event occurred.
Syntax
var ctrlKeyPressed = instanceOfKeyboardEvent.ctrlKey
Return value
A Boolean
Example
<html>
<head>
<title>ctrlKey example</title>
<script type="text/javascript">
function showChar(e){
alert(
"Key Pressed: " + e.key + "\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>
Specifications
| Specification | Status | Comment |
|---|---|---|
| Document Object Model (DOM) Level 3 Events Specification The definition of 'KeyboardEvent.ctrlKey' in that specification. | Obsolete | Initial definition. |
Browser compatibility
BCD tables only load in the browser
See also
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