$("#repeatPassword, #passwordInput").on("keyup", function () {
        if($password.value != "" && $repeatPassword.value != ""){
            if($password.value != $repeatPassword.value){
                $("#repeatPassword").removeClass("is-valid").addClass("is-invalid");
                $("#repeat-password").removeClass("d-none valid-feedback").addClass("d-block invalid-feedback").text("Incorrect Password");
                matching = false;
            } else{
                $("#repeatPassword").removeClass("is-invalid").addClass("is-valid");
                $("#repeat-password").removeClass("invalid-feedback").addClass("valid-feedback").text("Correct Password");
                matching = true;
            }
        }
    });

    $("#username").on("keyup", function () {
        $.post("/username", {input: $("#username").val()}, function (data) {
            if(data.message == "EXIST"){
                $("#username").removeClass("is-valid").addClass("is-invalid");
                $("#choose-username").removeClass("d-none valid-feedback").addClass("d-block invalid-feedback").text("This username already exists");
                matchingUsername = false;
            } else{
                $("#username").removeClass("is-invalid").addClass("is-valid");
                $("#choose-username").removeClass("invalid-feedback").addClass("valid-feedback").text("Valid Username");
                matchingUsername = true;
            }
        });
    });

    $("#passwordInput").on("keyup", function () {
        if(!checkPassword($password.value)){
            $("#passwordInput").addClass("is-invalid");
            $("#choose-password").removeClass("d-none valid-feedback").addClass("d-block invalid-feedback").text("Your password must be 8-20 character long, contain letters and numbers," +
                " and must not contain spaces or special characters.");
            $("#passwordHelpBlock").addClass("d-none");
        } else{
            $("#passwordInput").removeClass("is-invalid").addClass("is-valid");
            $("#choose-password").removeClass("d-none invalid-feedback").addClass("d-block valid-feedback").text("Safe Password");
            $("#passwordHelpBlock").addClass("d-none");
        }
    });

    $("#registration-btn").on("click", function () {
        if(checkingData() && matching && !toobig && matchingUsername){
            var img = "";
            if(imageloaded != "") img = imageloaded;
            $.post("/register", { username: $username.value, password: $password.value,
                profileImg: img} , function(data){
                if(data.message == "BAD"){
                    $("#alert-register").removeClass("d-none alert-success").addClass("d-block alert-danger").text("Something went wrong!");
                } else{
                    var url = window.location.href;
                    var pos = url.indexOf("register.html");
                    window.location.href = url.substring(0, pos);
                }
            });
        }
    });