KeyboardEvent.shiftKey
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015年7月.
KeyboardEvent.shiftKey 只读属性返回一个 Boolean 值，表示事件触发时 shift 键是 (true) 否 (false) 按下。
值
一个布尔值。
示例
js
<html>
<head>
<title>shiftKey example</title>
<script type="text/javascript">
function showChar(e){
alert(
"Key Pressed: " + String.fromCharCode(e.charCode) + "\n"
+ "charCode: " + e.charCode + "\n"
+ "SHIFT key pressed: " + e.shiftKey + "\n"
+ "ALT key pressed: " + e.altKey + "\n"
);
}
</script>
</head>
<body onkeypress="showChar(event);">
<p>Press any character key, with or without holding down
the SHIFT key.<br />
You can also use the SHIFT key together with the ALT key.</p>
</body>
</html>
规范
| Specification |
|---|
| UI Events # dom-keyboardevent-shiftkey |
浏览器兼容性
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