HTML DOM 输入复选框 autofocus 属性

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

HTML DOM 输入复选框 autofocus 属性返回并修改 type="checkbox"的 HTML 输入元素的 autofocus 属性值。

语法

以下是语法 −

1. 返回 autofocus

object.autofocus

2. 修改 autofocus

object.autofocus = true|false

示例

让我们看一个 autofocus 属性的示例 −

<!DOCTYPE html>
<html>
<head>
<title<HTML DOM autofocus property</title<
<style>
   body{
      text-align:center;
   }
   p{
      font-size:1.5rem;
      color:#ff8741;
   }
   input{
      width:30px;
      height:30px;
      outline:2px solid #db133a;
   }
   button{
      background-color:#db133a;
      color:#fff;
      padding:8px;
      border:none;
      width:120px;
      margin:0.5rem;
      border-radius:50px;
      outline:none;
   }
</style>
</head>
<body>
<h1>autofocus Property Example</h1>
<p>Do you need help?</p>
<input type="checkbox" autofocus>
<br>
<button onclick="yes()">Yes</button>
<button onclick="no()">No</button>
<script>
   function yes() {
      document.querySelector("input").checked = true;
   }
   function no() {
      document.querySelector("input").checked = false;
   }
</script>
</body>
</html>