Hello

I'm busy with a new mini-project but I'm new with Javascript and AJAX.
I'm using a little bit of the Prototype Framework and the AJAX-object is a template from school.

But I've got a some problems with my formvalidation script. I created for every check (like: DublicateName, DublicateEmail, ValidEmail, ...) a function. Now I want to make a function that checks all these earlier functions.

File:
http://pastebin.parentnode.org/32203

Function example of the dublicate nickname

function CheckDublicateNickname() 
{
    var http = createREQ();
    var divReturn = $('return');
    http.onreadystatechange = function() {
        if(http.readyState == 4) {
            if (http.responseText == $('nickname2').value) {
                divReturn.innerHTML = "<p class='reg_error'>Nickname bezet!</p>";
                document.nicknameSrc.src = "img/ico.cross.png";
                $('nickname2').focus();
                return false;
            } else if (http.responseText == "No Result") {
                divReturn.innerHTML = "";
                document.nicknameSrc.src = "img/ico.accept.png";
                return true;
            } else if ($('nickname2').value == '') {
                divReturn.innerHTML = "<p class='reg_error'>Vul een nickname in!</p>";
                document.nicknameSrc.src = "img/ico.cross.png";
                $('nickname2').focus();
                return false;
            }
        }
    }
    http.open("POST", "php/modules/CheckDublicateNickname.php");
    http.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    http.send("nickname=" + $('nickname2').value)
}

Overall function (this one need to check all the earlier functions)

function CheckRegistrationForm()
{
    var msg = "Volgende velden zijn niet of onjuist ingevuld: \n\n";
    var error = false;
    var nickname = $('nickname2').value;
    var email = $('email').value;
    var captcha = $('security_code').value;
    
    if (nickname == "") { 
        msg += "- Nickname \n"; 
        var error = true; 
    } 
    if (email == "") { 
        msg += "- E-mailadres \n"; 
        var error = true; 
    }
    if (captcha == "") {
        msg +="- Controle \n";
        var error = true;
    }
    if (error) { 
        alert(msg); return false;
    }
    if (CheckDublicateNickname() == true) {
        alert("test");
    }
}

Now when CheckDublicateNickname () is true, I want to store some data to a MySQL database with AJAX (this is not a problem). The problem is that my function: CheckDublicateNickname () doesn't give a true of false. At every if and else function is a return with true of false...

What is the solution?
I hope you can help.

Grtz,
Moby

When I add this: (red colored text)

function CheckDublicateNickname() 
{
    var http = createREQ();
    var divReturn = $('return');
    http.onreadystatechange = function() {
        if(http.readyState == 4) {
            if (http.responseText == $('nickname2').value) {
                divReturn.innerHTML = "<p class='reg_error'>Nickname bezet!</p>";
                document.nicknameSrc.src = "img/ico.cross.png";
                $('nickname2').focus();
                return false;
            } else if (http.responseText == "No Result") {
                divReturn.innerHTML = "";
                document.nicknameSrc.src = "img/ico.accept.png";
                return true;
            } else if ($('nickname2').value == '') {
                divReturn.innerHTML = "<p class='reg_error'>Vul een nickname in!</p>";
                document.nicknameSrc.src = "img/ico.cross.png";
                $('nickname2').focus();
                return false;
            }
        }
    }
    http.open("POST", "php/modules/CheckDublicateNickname.php");
    http.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    http.send("nickname=" + $('nickname2').value)
    return true;
}

The function gives me the alert... But I want to have the returns insde the if(http.readyState == 4) { because I need the reaction (http.responseText) from my PHP file to validate and not from the whole functions...