​x
 
<!DOCTYPE html>
<html>
<body>
​
<h3>��ʾ��η��� Keygen ����</h3>
​
<keygen id="myKeygen" name="security">
​
<p>�����ť������ keygen Ԫ�ء�</p>
​
<button onclick="myFunction()">��һ��</button>
​
<script>
function myFunction()
{
var x = document.getElementById("myKeygen");
x.disabled = true;
}
</script>
​
</body>
</html>
​