原页面JS函数

function login() {
    var url="/backGroundManagement.jsp?username="+decodeURI(document.all.username.value);
    url+="&password=" + decodeURI(document.all.password.value);
    window.location.href= url;
   // window.location.href = "/backGroundManagement.jsp?username="+decodeURI(document.all.username.value)+"&password=" + decodeURI(document.all.password.value);
}

跳转页面

<head>
       ......
        <script language="JavaScript">
        function load(){

            var url=location.search;
            var Request = new Object();
            if(url.indexOf("?")!=-1)
            {
                var str = url.substr(1),　//去掉?号
                    aStrs= str.split("&");
                for(var i=0;i<aStrs.length;i++)
                {
                    Request[aStrs[i].split("=")[0]]=decodeURIComponent(aStrs[i].split("=")[1]);
                }
            }
            alert('姓名：' + Request["username"]);
            alert('密码：' + Request["password"]);

            var name=Request["username"];

            if(name==undefined){
                window.location="http://localhost:8080/login.jsp";
            }

            else{
                alert(name);
            }

        }

        </script>

    </head>
<body class="main_body" onload="load()">