fmpq.com
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Fmpq教程(fmpq.com)</title> <script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"> </script> <script> i=0; $(document).ready(function(){ $("input").keypress(function(){ $("span").text(i+=1); }); }); </script> </head> <body> 输入你的名字: <input type="text"> <p>按键的次数: <span>0</span></p> </body> </html>
运行结果