Hook Drupal Ajax Function on Webform Submit

(function($) {

    Drupal.subscribeAjax = {
        form_id: 'webform-client-form-34'  // your webform id
    };

    Drupal.behaviors.subscribeAjax = {
        attach: function(context, settings) {
            // Extend Drupal.ajax object
            for (ajax_el in settings.ajax) {
                if (typeof Drupal.ajax[ajax_el] != 'undefined' && Drupal.ajax[ajax_el].element.form) {
                    if (Drupal.ajax[ajax_el].element.form.id === Drupal.subscribeAjax.form_id) {
                        Drupal.ajax[ajax_el].beforeSend = Drupal.subscribeAjax.beforeSend;
                        Drupal.ajax[ajax_el].success = Drupal.subscribeAjax.success;
                        Drupal.ajax[ajax_el].error = Drupal.subscribeAjax.error;
                    }
                }
            }
        }
    };

    Drupal.subscribeAjax.beforeSend = function(first, second) {
        console.log("before submit");
        Drupal.ajax.prototype.beforeSend.call(this, first, second);
    }
    Drupal.subscribeAjax.success = function(response, status) {
        console.log("on success");
        //console.log(JSON.stringify(response));
        Drupal.ajax.prototype.success.call(this, response, status);
    }
    Drupal.subscribeAjax.error = function(response, uri) {
        console.log("on error");
        Drupal.subscribeAjax.enableForm(this.element.form);
        Drupal.ajax.prototype.error.call(this, response, uri);
    }

})(jQuery);
// ajaxComplete
(function($) {
$(document).ajaxComplete(function(event, xhr, options) {
            var data = $.httpData(xhr,options.dataType);
            //console.log(JSON.stringify(data));
                $('#webform-ajax-wrapper-34 .error').delay(5000).fadeOut(400);
});
}(jQuery));