Ajax

    $(document).ready(function () {
        $('#form_discount').submit(function () {

            // show that something is loading
            $('#response').html("<b>Loading response...</b>");

            /*
             * 'post_receiver.php' - where you will pass the form data
             * $(this).serialize() - to easily read form data
             * function(data){... - data contains the response from post_receiver.php
             */
            $.ajax({
<?php $request_ajax = URL . 'application/models/dashboard/Mov/Services/ServicesAjax.php'; ?>
                type: 'POST',
                dataType: "json",
                url: '<?= $request_ajax; ?>',
                data: $(this).serialize()
            })
                    .done(function (data) {
                        $('#myModal').modal('toggle');
                        if (JSON.stringify(data['erro']) == 'true') {
                            alert('ERROR ' + JSON.stringify(data['msg']));
                            return false;
                        } else {
                            // show the response
                            $('#response').html(JSON.stringify(data['msg']));
                        }

                    })
                    .fail(function (data) {
                        // just in case posting your form failed
                        alert("Posting failed. \n Error :" + JSON.stringify(data['msg']));

                    });

            // to prevent refreshing the whole page page
            return false;

        });
    });