Button loading jquery Plugin

button.js

(function ($) {
    $.fn.button = function (action) {
        var self = $(this);
        if (action == 'loading') {
            if ($(self).attr("disabled") == "disabled") {
                e.preventDefault();
            }
            $(self).attr("disabled", "disabled");
            $(self).attr('data-btn-text', $(self).html());
            $(self).html('<i class="fa fa-spinner fa-spin"></i>' + $(self).text());
        }
        if (action == 'reset') {
            $(self).html($(self).attr('data-btn-text'));
            $(self).removeAttr("disabled");
        }
    }
})(jQuery);