这里说的滑移其实就是减速效果，能根据设定的坐标平面移动。
效果
代码：
<!
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=gb2312"
/>
<
title
>
滑移效果
</
title
>
<
script
type
="text/javascript"
>
var $ = function (id) {
return "string" == typeof id ? document.getElementById(id) : id;
};function Event(e){ var oEvent = document.all ? window.event : e; if (document.all) { oEvent.pageX = oEvent.clientX + document.documentElement.scrollLeft; oEvent.pageY = oEvent.clientY + document.documentElement.scrollTop; } return oEvent;}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; }};var Class = { create: function() { return function() { this.initialize.apply(this, arguments); } }}Object.extend = function(destination, source) { for (var property in source) { destination[property] = source[property]; } return destination;}var Slippage = Class.create();Slippage.prototype = { initialize: function(obj, options) { this.obj = $(obj); this._timer =null; this._xs = this._ys = []; this.X = parseInt(this.obj.style.left) || 0; this.Y = parseInt(this.obj.style.top) || 0; this.SetOptions(options); this.Step = Math.abs(this.options.Step); this.Time = Math.abs(this.options.Time); this.Loop = this.options.Loop; this.Relative = this.options.Relative; this.SetPosition(this.options.X || [], this.options.Y || []); }, //设置默认属性 SetOptions: function(options) { this.options = {//默认值 Step: 10,//滑动变化率 Time: 10,//滑动延时 X: [],//x坐标变化 Y: [],//y坐标变化 Loop: false,//是否循环 Relative: true//是否相对位置 }; Object.extend(this.options, options || {}); }, // SetPosition: function(arrX, arrY) { if(arrX.length <= 0 && arrX.length <= 0) return false; else if(arrX.length <= 0) arrX = [0]; else if(arrY.length <= 0) arrY = [0]; this._xs = arrX; this._ys = arrY; if(this.Relative){ for(var i in this._xs){ if (i == 0) { this._xs[0] += this.X; } else { this._xs[i] += this._xs[i-1]; } } for(var i in this._ys){ if (i == 0) { this._ys[0] += this.Y; } else { this._ys[i] += this._ys[i-1]; } } } this.Set(); }, // Set: function() { //当全部坐标指向同一个位置时会进入死循环 if(this._xs.length <= 0 && this._ys.length <= 0) return; if(this._xs.length > 0) this.X = this._xs.shift(); if(this._ys.length > 0) this.Y = this._ys.shift(); if(this.Loop && this._xs.length > 0 && this._ys.length > 0) { this._xs.push(this.X);this._ys.push(this.Y); } //$("aa").innerHTML+=this._ys.length+"="; this.Move(this.X, this.Y); }, // Move: function(iX, iY) { clearTimeout(this._timer); var iLeft = parseInt(this.obj.style.left) || 0, iTop = parseInt(this.obj.style.top) || 0, iLeftStep = this.GetStep(iX, iLeft), iTopStep = this.GetStep(iY, iTop); if (iLeftStep == 0 && iTopStep == 0) { this.Set(); } else { this.obj.style.left = (iLeft + iLeftStep) + "px"; this.obj.style.top = (iTop + iTopStep) + "px"; var oThis = this; this._timer = setTimeout(function(){ oThis.Move(iX, iY); }, this.Time); } }, // GetStep: function(iTarget, iNow) { var iStep = (iTarget - iNow) / this.Step; if (iStep == 0) return 0; if (Math.abs(iStep) < 1) return (iStep > 0 ? 1 : -1); return iStep; }};window.onload = function(){ new Slippage("idSlippage3", { X: [200,200,0,-200,-100,-100], Y: [0,0,100,-100,100,-100], Loop: true }); var oSlippage = new Slippage("idSlippage"); $("aa").onclick = function(e){ var oEvent = Event(e);oSlippage.Move(oEvent.pageX, oEvent.pageY);} var oSlippage2 = new Slippage("idSlippage2", { Step: 1, Relative: false }),x=[],y=[]; $("bb").onmousedown = function(e){ addEventHandler(this, "mousemove", Set); } $("bb").onmouseout = function(e){ removeEventHandler(this, "mousemove", Set); x=y=[];} $("bb").onmouseup = function(e){ removeEventHandler(this, "mousemove", Set); oSlippage2.SetPosition(x, y);x=y=[];} function Set(e){ var oEvent = Event(e); x.push(oEvent.pageX); y.push(oEvent.pageY); }}
</
script
>
</
head
>
<
body
>
自动滑移:
<
div
id
="cc"
style
="height:200px; width:500px; border:1px solid #000000; position:relative;overflow:hidden;"
>
<
div
id
="idSlippage3"
style
="width:10px; height:10px; background:#000000; position:absolute; z-index:99; top:50px; left:50px;"
>
</
div
>
</
div
>
定点滑移:（鼠标点击）
<
div
id
="aa"
style
="height:200px; width:500px; border:1px solid #000000; overflow:hidden;"
>
<
div
id
="idSlippage"
style
="width:10px; height:10px; background:#000000; position:absolute; z-index:99; top:-50px; left:50px;"
>
</
div
>
</
div
>
定线滑移:（鼠标拖动轨迹）
<
div
id
="bb"
style
="height:200px; width:500px; border:1px solid #000000; overflow:hidden;"
>
<
div
id
="idSlippage2"
style
="width:10px; height:10px; background:#000000; position:absolute; z-index:99; top:-50px; left:50px;"
>
</
div
>
</
div
>
</
body
>
</
html
>
本文转自博客园cloudgamer的博客，原文链接：JavaScript 滑移效果，如需转载请自行联系原博主。
