bootstrap dropdown nicer

bootstrap-dropdown.js

(function($) {

    "use strict"; // jshint ;_;

    /* DROPDOWN CLASS DEFINITION
     * ========================= */

    var toggle = '[data-toggle="dropdown"]',
        Dropdown = function (element) {
            var $el = $(element).on('click.dropdown.data-api', this.toggle);
            $('html').on('click.dropdown.data-api', function () {
                $el.parent().removeClass('open');
            })
        };

    Dropdown.prototype = {

        constructor: Dropdown,

        toggle: function (e) {
            var $this = $(this),
                $parent, selector, isActive;

            if ($this.is('.disabled, :disabled')) return;

            selector = $this.attr('data-target');

            if (!selector) {
                selector = $this.attr('href');
                selector = selector && selector.replace(/.*(?=#[^\s]*$)/, '');
            }

            $parent = $(selector);
            $parent.length || ($parent = $this.parent());

            isActive = $parent.hasClass('open');

            clearMenus();

            if (!isActive) $parent.toggleClass('open');

            return false;
        }

    };

    function clearMenus() {
        $(toggle).parent().removeClass('open');
    }


    /* DROPDOWN PLUGIN DEFINITION
     * ========================== */

    $.fn.dropdown = function (option) {
        return this.each(function () {
            var $this = $(this),
                data = $this.data('dropdown');
            if (!data) $this.data('dropdown', (data = new Dropdown(this)));
            if (typeof option == 'string') data[option].call($this);
        });
    };

    $.fn.dropdown.Constructor = Dropdown;


    /* APPLY TO STANDARD DROPDOWN ELEMENTS
     * =================================== */

    $(function () {
        $('html').on('click.dropdown.data-api', clearMenus);
        $('body').on('click.dropdown', '.dropdown form', function (e) {
            e.stopPropagation();
        }).on('click.dropdown.data-api', toggle, Dropdown.prototype.toggle);
    });
}(window.jQuery));