HTML DOM KeyboardEvent metaKey 属性

htmlweb developmentfront end technology更新于 2025/6/22 17:16:17

HTML DOM KeyboardEvent metaKey 属性返回布尔值 (true/false)，该布尔值对应于是否通过事件按下了 meta 键。

语法

以下是语法 −

返回 booleanValue −

event.metaKey

示例

让我们看一个 KeyboardEvent metaKey 属性的示例 −

<!DOCTYPE html>
<html>
<head>
<title>KeyboardEvent metaKey</title>
<style>
   form {
      width:70%;
      margin: 0 auto;
      text-align: center;
   }
   * {
      padding: 2px;
      margin:5px;
   }
   input[type="button"] {
      border-radius: 10px;
   }
</style>
</head>
<body>
<form>
<fieldset>
<legend>KeyboardEvent-metaKey</legend>
<label>Editor:
<input type="text" id="textSelect" onkeydown="getEventData(event)" autocomplete="off">
</label>
<div id="divDisplay">I Dare you to press the meta key</div>
</fieldset>
</form>
<script>
   var divDisplay = document.getElementById("divDisplay");
   var textSelect = document.getElementById("textSelect");
   function getEventData(InputEvent) {
      if(InputEvent.metaKey === true)
         divDisplay.textContent = 'You are very brave!';
      else
         divDisplay.textContent = 'You scared enough?';
   }
</script>
</body>
</html>