Button Submit false works, but not the redirecting

Question

Currently, I am working on a formula. I created the check function and they are all working. If the check function returns false nothing gets saved, but it still redirects to the congrats page?

here the code:

function check() {
    var msg = "";

    if ($_POST['Bustransfer'] == "ja" ) {
        msg = "wrong\n";
        document.formular.v6.style.backgroundColor = "#FF0000";
    } 

    if (msg == "") return(true);
    else {
        alert(msg);
        return(false);
    }
}

and then I got the following in the body section:

<form method="post" action="Email.php" name="formular" onsubmit="return check()">

I don't get it, hope you can help me. Cheers!

Answer 1

You are mixing them(javascript & php) up. Should be '<?php echo $_POST['Bustransfer']; ?>' instead of $_POST['Bustransfer'] in the check.

function check() {
    var msg = "";

    if ('<?php echo $_POST['Bustransfer']; ?>' == "ja" ) {
        msg = "wrong\n";
        document.formular.v6.style.backgroundColor = "#FF0000";
    } 

    if (msg == "") return(true);
    else {
        alert(msg);
        return(false);
    }
}