jquery可自定义控制开关的元素拖动插件

使用方法

            $(document).ready(function() {
                $("#enable").click(function() {
                    $(".draggable").draggableTouch();
                });
                $("#enable-transform").click(function() {
                    $(".draggable").draggableTouch({useTransform:true});
                });
                $("#disable").click(function() {
                    $(".draggable").draggableTouch("disable");
                });
                
                $(".draggable").bind("dragstart", function(e, pos) {
                    console.log("dragstart:", this, pos.left + "," + pos.top);
                }).bind("dragend", function(e, pos) {
                    console.log("dragend:", this, pos.left + "," + pos.top);
                });
            });
            
            // if this is a touch device, we assume we don't have a visible console and use
            // a crappy homemade one :)
            if ("ontouchstart" in document.documentElement) {
                window.console = {
                    log: function(a, b, c) {
                        if (a && b && c)
                            $("<div>" + a + " " + b + " " + c + "</div>").appendTo($("#console"));
                        else if (a && b)
                            $("<div>" + a + " " + b + "</div>").appendTo($("#console"));
                        else if (a)
                            $("<div>" + a + "</div>").appendTo($("#console"));
                    }
                };
            }