循环时如何继续？

Question

The user is typing his/her password until it would be correct. When user want to click "Cancel" we ask "Are you sure?" and if the answer is no, then again ask for the password.

I tried to use to strat again but it does not work =(

var password = "username",
    user_password        ,
    checked = true       ,
    user_password = prompt("Enter your password"),
    checked_confirm      ;

label: while(checked){
    if(user_password == password){
        alert("You are successfully logged in");
        break;
    }
    else if(user_password == null){
        checked_confirm =  confirm("Are you sure you want to cancel authorization?");
        if(checked_confirm){
            alert("You have canceled authorization");
            break;
        }
        else{
            continue lable;
        }
    }
    else{
        user_password = prompt("Enter your password");
    }
}

Answer 1

Ask for the password at the start of the loop, and don't break `till you get it:

 var password = "username", user_password, checked_confirm; while (true) { user_password = prompt("Enter your password"); if (user_password == password) { alert("You are successfully logged in"); break; } else if (user_password == null) { checked_confirm = confirm("Are you sure you want to cancel authorization?"); if (checked_confirm) { alert("You have canceled authorization"); break; } } else { alert("Wrong password"); } }