<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> </head> <script type="text/javascript"> loopy(); function loopy() { var sWord = prompt("输入正确密码才能登陆!",""); var password = "123456"; var isCancle = false; while(sWord!=password){ if(sWord==null){ isCancle = true; break; }else{ sWord = prompt("输入正确密码才能登陆!",""); } } if(!isCancle){ alert("密码正确谢谢你的光临!"); }else{ location.replace("about:blank"); window.close(); } } </script> <body> </body> </html>