js implements div drag animation running trajectory effect code sharing

js implements div drag animation running trajectory effect code sharing_javascript skills

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Release： 2016-05-16 15:42:01

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The example in this article describes the running trajectory effect of js div drag animation. Share it with everyone for your reference. The details are as follows:
This is a div drag animation running track effect source code based on js. It is a native js div drag effect to create a mouse drag div animation running track effect code. You can choose two drag display modes: [Remember Track] and [Don’t Remember Track] to display different drag effects.
运行效果图： -------------------查看效果下载源码----------- --------

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The js div drag animation running track effect code shared with you is as follows

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>js div拖动动画运行轨迹效果代码 - 脚本之家</title>

<style type="text/css">
*{margin:0px;padding:0px;}
#div1{position:relative;left:200px;top:200px;width:100px; height:100px; background-color:#f60;cursor:move;}
</style>

<script type="text/javascript">
var isIE = (document.all)&#63;true:false;

var $ID = function(id){
 return "string"==typeof id&#63;document.getElementById(id):id;
}

var Class = {
 create:function(){
 return function(){
  this.initilize.apply(this,arguments);
 }
 }
}

var Extend = function(destination, source){
 for(var property in source){
 destination[property] = source[property];
 }
}

var Bind = function(object,fun){
 var args = Array.prototype.slice.call(arguments).slice(2);
 return function(){
 return fun.apply(object,args);
 }
}

var BindAsEventListener = function(object,fun){
 var args = Array.prototype.slice.call(arguments).slice(2);
 return function(event){
 return fun.apply(object,[event||window.event].concat(args));
 }
}

function addEventHandler(oTarget, sEventType, fnHandler) {
 if (oTarget.addEventListener) {
 oTarget.addEventListener(sEventType, fnHandler, false);
 } else if (oTarget.attachEvent) {
 oTarget.attachEvent("on" + sEventType, fnHandler);
 } else {
 oTarget["on" + sEventType] = fnHandler;
 }
};

function removeEventHandler(oTarget, sEventType, fnHandler) {
 if (oTarget.removeEventListener) {
 oTarget.removeEventListener(sEventType, fnHandler, false);
 } else if (oTarget.detachEvent) {
 oTarget.detachEvent("on" + sEventType, fnHandler);
 } else { 
 oTarget["on" + sEventType] = null;
 }
};

function getNodePosition(node,type){//type="left"or"top"
 var nodeTemp = node;
 var l = 0;
 var t = 0;
 while(nodeTemp!=document.body&&nodeTemp!=null){
 l += nodeTemp.offsetLeft;
 t += nodeTemp.offsetTop;
 nodeTemp = nodeTemp.offsetParent;
 }
 if(type.toLowerCase()=="left") return l;
 else return t;
}
//前面通常都用一个base.js封装
</script>

<script type="text/javascript">
var MyDrag = Class.create();

MyDrag.prototype = {
 initilize:function(obj){
 this.Obj = $ID(obj);
 this._x = this._y = 0;
 this._xx = this._yy = 0;//Move记录坐标
 this.Obj.style.position = "absolute";
 this._pos = [];
 this._ifSavePos = true;
 this._t = null;
 this._speed = 10;
 this._indexMove = 0;//全局的MoveIndex
 this._fnStart = BindAsEventListener(this,this.Start); 
 this._fnMove = BindAsEventListener(this,this.Move);
 this._fnStop = Bind(this,this.Stop);
 addEventHandler(this.Obj,"mousedown",this._fnStart);
 },
 Start:function(oEvent){
 if(!this._ifSavePos)
 this._pos = [];
 this.Drag = this.Obj.cloneNode(true);
 if(isIE) this.Drag.style.filter = "alpha(opacity=50)";
 else this.Drag.style.opacity = "0.5";
 this.Obj.parentNode.appendChild(this.Drag);

 this._left1 = this._xx = getNodePosition(this.Obj,"left");
 this._top1 = this._yy = getNodePosition(this.Obj,"top");
 this._x = oEvent.clientX - this.Obj.offsetLeft;
 this._y = oEvent.clientY - this.Obj.offsetTop;
 addEventHandler(document,"mousemove",this._fnMove);
 addEventHandler(document,"mouseup",this._fnStop);
 this._t = setInterval(Bind(this,this.SavePos),10);
 },
 SavePos:function(){//记录坐标点
 this._pos.push(this._xx + "_" + this._yy);
 },
 Move:function(oEvent){
 if(isIE) oEvent.returnValue = false;
 this._xx = oEvent.clientX - this._x;
 this._yy = oEvent.clientY - this._y;
 this.Drag.style.left = this._xx + "px";
 this.Drag.style.top = this._yy + "px";
 },
 Stop:function(){
 removeEventHandler(document,"mousemove",this._fnMove);
 removeEventHandler(document,"mouseup",this._fnStop);
 this.Obj.parentNode.removeChild(this.Drag);
 this.Obj.style.left = this._xx + "px";
 this.Obj.style.top = this._yy + "px";
 clearInterval(this._t);
 this._fnCloneMove = Bind(this,this.CloneMove);
 this._t = setTimeout(this._fnCloneMove,50);
 },
 CloneMove:function(){
 if(this._indexMove<6){
  new ObjMove({x1:this._left1,y1:this._top1,x2:this._xx,y2:this._yy,pos:this._pos});
  this._indexMove++;
  this._t = setTimeout(this._fnCloneMove,50);
 }else{
  clearTimeout(this._t);
  this._indexMove = 0;
 }
 }
}

var ObjMove = Class.create();
 ObjMove.prototype = {
 initilize:function(options){
 this.SetOptions(options);
 this.Obj = document.createElement("DIV");
 this.Obj.style.cssText = "position:absolute;left:"+ this.options.x1 +"px;top:"+ this.options.y1 +"px;width:100px;height:100px;background-color:#f60;fliter:alpha(opacity=100);opacity:1;";
 document.body.appendChild(this.Obj);
 this.Move2();
 },
 SetOptions: function(options) {
 this.options = {//默认值
  x1:   0,
  y1: 0,
  x2: 0,
  y2: 0,
  pos: []
 };
 Extend(this.options, options || {});
 },
 Move2:function(){
 this._indexMove = 0;
 this._fnMovePos = Bind(this,this.MovePos);
 this._t = setInterval(this._fnMovePos,10);
 },
 MovePos:function(){
 if(this._indexMove>=this.options.pos.length){
  this.options.pos = [];
  document.body.removeChild(this.Obj);
  clearInterval(this._t);
 }else{
  this.Obj.style.left = this.options.pos[this._indexMove].split("_")[0] + "px";
  this.Obj.style.top = this.options.pos[this._indexMove].split("_")[1] + "px";
 }
 this._indexMove++;
 }
}

onload = function(){
 var myDrag = new MyDrag("div1");
 $ID("rad1").onclick = function(){
 myDrag._ifSavePos = true;
 }
 $ID("rad2").onclick = function(){
 myDrag._ifSavePos = false;
 }
}
</script>

</head>
<body>
<center><br>
<div>随意拖动那个小方块几秒钟</div><br>

<label for="rad1"><input type="radio" id="rad1" name="rad" checked="checked"/>记住轨迹</label>

<label for="rad2"><input type="radio" id="rad2" name="rad"/>不记住轨迹</label>

<div id="div1"></div>
</center>

<div style="text-align:center;margin:50px 0; font:normal 14px/24px 'MicroSoft YaHei';">
<p>适用浏览器：IE8、360、FireFox、Chrome、Safari、Opera、傲游、搜狗、世界之窗. </p>
<p>来源：<a href="http://www.jb51.net/" target="_blank">脚本之家</a></p>
</div>

</body>
</html>

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