MouseEvent.ctrlKey

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

MouseEvent.ctrlKey 是只读属性，可返回一个布尔值，当 ctrl 键被按下，返回 true，否则返回 false。

语法

var ctrlKeyPressed = instanceOfMouseEvent.ctrlKey

返回值

A boolean

示例

js
<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
UI Events
# dom-mouseevent-ctrlkey

浏览器兼容性

BCD tables only load in the browser

相关链接