HTML DOM KeyboardEvent key 属性

htmlweb developmentfront end technology更新于 2025/6/18 22:36:17

KeyboardEvent key 属性返回通过事件按下的按键对应的按键标识符。

语法

以下是语法 −

返回最新输入字符的标识符 −

event.key

示例

让我们看一个 KeyboardEvent key 属性的示例 −

<!DOCTYPE html>
<html>
<head>
<title>KeyboardEvent key</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-key</legend>
<label>Fill in the blanks:
<input type="text" id="textSelect" placeholder="__ for Ball" onkeypress="getEventData(event)" autocomplete="off">
</label>
<div id="divDisplay"></div>
</fieldset>
</form>
<script>
   var divDisplay = document.getElementById("divDisplay");
   var textSelect = document.getElementById("textSelect");
   function getEventData(InputEvent) {
      if(InputEvent.key === 'B')
         divDisplay.textContent = 'Correct Answer';
      else if(InputEvent.key === 'b')
         divDisplay.textContent = 'Close call, you might have caps lock turned off';
      else
         divDisplay.textContent = 'Try Again, '+textSelect.placeholder;
      textSelect.textContent = '';
   }
</script>
</body>
</html>