jQuery UI live绑定 Draggable Droppable

(function ($) {
    $.fn.liveDraggable = function (opts) {
        this.live("mouseover", function () {
            if (!$(this).data("init")) {
                $(this).data("init", true).draggable(opts);
            }
        });
        return $();
    };
} (jQuery));

(function ($) {
    $.fn.liveDroppable = function (opts) {
        this.live("mouseover", function () {
            if (!$(this).data("init")) {
                $(this).data("init", true).droppable(opts);
            }
        });
        return $();
    };
} (jQuery));