function tokenEncoder(password, date){
    keyword = "213jhkjhg*&^";
    token = password + keyword + date;
    return token;   
}

function getDate(){
    let now = new Date();
    let year = now.getFullYear();
    let month = now.getMonth() + 1;
    let date = year + "-" + month;
    return date;
}


let localToken = localStorage.getItem("token");
if(localToken === "" || localToken === null){
    var password=""
        password=prompt('请输入密码(本网站需输入密码才可以进入):','');
        function custom_close()
        {
            window.opener=null;
            window.open('','_self');
            window.close();        
        }
        if  (password !='yys')
            {alert("密码不正确，无法进入本站！！！")
            
            custom_close();            
            alert("即将打开百度")//加这一段是为了避免有些浏览器不支持关闭浏览器的js ,所以请求跳转到一个新页面！
            window.location.href='http://www.baidu.com';
            }else{
            let token = tokenEncoder(password, getDate());
            localStorage.setItem("token", token);
            }
            }else{
                let token = tokenEncoder('yys', getDate());
                if(token != localToken){
                    var password=""
                    password=prompt('请输入密码(本网站需输入密码才可以进入):','');
                    function custom_close(){
                        window.opener=null;
                        window.open('','_self');
                        window.close();        
                    }
                    if (password !='yys'){
                        alert("密码不正确，无法进入本站！！！")
                        
                        custom_close();            
                        alert("即将打开百度")//加这一段是为了避免有些浏览器不支持关闭浏览器的js ,所以请求跳转到一个新页面！
                        window.location.href='http://www.baidu.com';
                        }else{
                        let token = tokenEncoder(password, getDate());
                        localStorage.setItem("token", token);
                    }
                }
            }