tryjsref_keygen_disabled2 在线代码实例

实例代码( Tip: 登录后体验更佳 )
运行代码

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<!DOCTYPE html>
<html>
<body>
<form action="demo_keygen.php" method="get">
  Username: <input type="text" name="usr_name">
  Encryption: <keygen id="myKeygen" name="security">
  <input type="submit">
</form>
<p>点击 "点我" 按钮禁用 keygen 字段。</p>
<button onclick="myFunction()">点我</button>
<script>
function myFunction()
{
document.getElementById("myKeygen").disabled=true;
}
</script>
</body>
</html>
 
 
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运行结果
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