<style type="text/css">

        * {

            margin: 0px;

            padding: 0px;

            font-family: "micsoft yahei","微軟雅黑";

            font-size: 15px;

        }

        div{

            width: 50px;

            height: 50px;

            background: #f00;

            border-radius:5px ;

            -moz-border-radius: 5px;

            -webkit-border-radius: 5px;

            cursor: pointer;

            position:  absolute;

            top: 60px;

            left: 30px;

        }

        input{

            position: absolute;

            top: 10px;

            left: 10px;

            padding: 3px;

            cursor: pointer;

        }

    </style>

html代碼

復(fù)制代碼代碼如下:

 <body>

 <input type="button" value="原路返回"/>

 <div></div>

 </body>

javascript代碼

復(fù)制代碼代碼如下:

<script type="text/javascript">

          //1、以鼠標(biāo)在div上點(diǎn)擊觸發(fā)為開始

          //2、點(diǎn)擊鼠標(biāo)移動(dòng)時(shí)觸發(fā)鼠標(biāo)移動(dòng)事件 向數(shù)組內(nèi)注入數(shù)據(jù)（移動(dòng)的坐標(biāo)）

          //3、以鼠標(biāo)從div上移開為結(jié)束

          //4、點(diǎn)擊“原路返回”按鈕遍歷數(shù)組（移動(dòng)的坐標(biāo)） 定時(shí)觸發(fā)數(shù)組內(nèi)的坐標(biāo)移動(dòng)div 達(dá)到”返回“的功能

            window.onload=function(){

                var oDiv=document.getElementsByTagName("div")[0];

                var oBtn=document.getElementsByTagName("input")[0];

                var time=null,arrTop=[],arrLeft=[];

                oDiv.onmousedown=function(ev){

                    var event=ev || window.event;

                    //獲取鼠標(biāo)在div內(nèi)的坐標(biāo)

                    var disX=event.clientX-oDiv.offsetLeft;

                    var disY=event.clientY-oDiv.offsetTop;

                    arrTop=[60];

                    arrLeft=[30];

                    document.onmousemove=function(ev){

                        var event=ev || window.event;

                        //獲取拖拽后鼠標(biāo)的位置

                        var l=event.clientX;

                        var t=event.clientY;

                        //把拖拽后的位置存進(jìn)數(shù)組里面，用拖拽后鼠標(biāo)的位置減去鼠標(biāo)在物體上的位置，就是拖拽后物體的位置

                        arrLeft.push(l-disX);

                        arrTop.push(t-disY);

                        oDiv.style.left=l-disX +"px";

                        oDiv.style.top=t-disY +"px";

                    };

                    document.onmouseup=function(){

                        document.onmousemove=null;

                        document.onmouseup=null;

                    };

                    return false;

                }

                //原路返回的核心就是把移動(dòng)時(shí)的坐標(biāo)記錄下來，然后進(jìn)行數(shù)組重排，并設(shè)定定時(shí)器把數(shù)組內(nèi)的搞寬賦值給物體。

                oBtn.onclick=function(){

                    arrTop.reverse();//重排

                    arrLeft.reverse();//重排

                    var i=0;

                    oBtn.time=setInterval(function(){

                        oDiv.style.top=arrTop[i]+"px";

                        oDiv.style.left=arrLeft[i]+"px";

                        i++;

                        if(i==arrTop.length){

                            clearInterval(oBtn.time);

                            arrTop=[];

                            arrLeft=[];

                        }

                    },20);

                }

            }

    </script>