fmpq.com
源代码：
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Fmpq教程(fmpq.com)</title> </head> <body> <form action="demo_keygen.php" method="get"> 用户名: <input type="text" name="usr_name"> 加密: <keygen id="myKeygen" name="security"> <input type="submit"> </form><br> <button onclick="disableKey()">禁用 Keygen 字段</button> <button onclick="undisableKey()">启用 Keygen 字段</button> <script> function disableKey(){ document.getElementById("myKeygen").disabled=true; } function undisableKey(){ document.getElementById("myKeygen").disabled=false; } </script> </body> </html>
运行结果