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KeyboardEvent.shiftKey - Web API 接口参考编辑

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。

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>

标准

Specification	Status	Comment
Document Object Model (DOM) Level 3 Events Specification KeyboardEvent.shiftKey	Obsolete	Initial definition.

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