Preventing multiple submits of the form about validity HOT 2 CLOSED

    //If the form is submitting due to a successfull validation reports true
    isSubmitting: function() {
        return this.submitting;
    },

    //true when the form is submitting
    submitting: false,

                        $(this).bind(
                            "submit",
                            function() {
                                if (!$.validity.submitting) {
                                    $.validity.start();
                                    f.apply(self);
                                    $.validity.submitting = $.validity.end().valid;
                                    if ($.validity.submitting) {
                                        $(this).hide();
                                    }
                                }

                                return $.validity.submitting;
                            }