采用JS判断用户登录
采用JS实现用户登录的判断（没有链接数据库），js代码如下（js代码是放在WebRoot下的js文件夹下的login.js中）：
function check(form){if(form.user.value.length<6||form.user.value.length>12){alert("用户名长度有错！")}else{if(form.password.value.length<6||form.password.value.length>12){alert("密码长度有错！")}else{if(form.user.value=="123456"&&form.password.value=="123456"){alert("登陆成功！")}else{alert("登录失败，用户名或密码出错！")}}}}?jsp代码如下：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <base href="<%=basePath%>"> <title>Login-登录</title> <meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">--><script charset="gb2312" src="js/login.js"></script> </head> <body><form action="" method="post" name="form" onsubmit="return check(form)"><table align="center"><tr><td>用户：</td><td><input type="text" name="user" ></td></tr><tr><td>密码：</td><td><input type="password" name="password" ></td></tr><tr><td></td><td><input type="submit" value="提交"></td></tr></table></form> </body></html>
?