KeyboardEvent.shiftKey

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。

语法

var shiftKeyPressed = instanceOfKeyboardEvent.shiftKey

返回值

布尔值

示例

<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

BCD tables only load in the browser

参考

KeyboardEvent