var userinput = prompt ("who are you?");
        var username = "admin";
        var password = "themaster";
        if (userinput == username) {
             passinput = prompt("password?")
             if (passinput == password){
            alert("welcome")
        }else{
            alert("Wrong Password")
        }
        } else {
            alert("i dont know you ")
        }