<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<style>
.Scroller {
line-height: 50px;
border: 1px solid #000000;
padding: 0px 10px;
height: 50px;
width: 400px;
}
.Scroller * {
margin: 0px;
padding: 0px;
}
.ScrollMid {
float: left;
}
.ScrollMid ul {
width: 800px;
float: left;
}
.ScrollMid li {
list-style: none;
float: left;
width: 390px;
padding-left: 10px;
}
</style>
</head>
<body>
<script type="text/javascript">
var $ = function (id) {
return typeof id == "string" ? document.getElementById(id) : id;
}
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;
}
function addEventHandler(oTarget, sEventType, fnHandler) {
if (oTarget.addEventListener) {
//非IE false:冒泡阶段 true:
oTarget.addEventListener(sEventType, fnHandler, false);
} else if (oTarget.attachEvent) {
//IE 冒泡阶段
oTarget.attachEvent("on" + sEventType, fnHandler);
} else {
oTarget["on" + sEventType] = fnHandler;
}
}
var Scroller = Class.create();
Scroller.prototype = {
//初始化
initialize: function (idScroller, idScrollMid, options) {
var oThis = this, oScroller = $(idScroller), oScrollMid = $(idScrollMid);
this.SetOptions(options);
this.Side = this.options.Side || ["up"];//方向
this.scroller = oScroller;//对象
this.speed = this.options.Speed;//速度
this.timer = null;//时间
this.pauseHeight = 0;//定高
this.pauseWidth = 0;//定宽
this.side = 0;//参数
this.pause = 0; //定高(宽)
//用于上下滚动
this.heightScroller = parseInt(oScroller.style.height) || oScroller.offsetHeight;
this.heightList = oScrollMid.offsetHeight;
//用于左右滚动
this.widthScroller = parseInt(oScroller.style.width) || oScroller.offsetWidth;
this.widthList = oScrollMid.offsetWidth;
oScroller.style.overflow = "hidden";
oScrollMid.appendChild(oScrollMid.cloneNode(true));
oScrollMid.appendChild(oScrollMid.cloneNode(true));
addEventHandler(oScroller, "mouseover", function () { oThis.Stop(); });
addEventHandler(oScroller, "mouseout", function () { oThis.Start(); });
this.Start();
},
//设置默认属性
SetOptions: function (options) {
this.options = {
Step: 1,//每次变化的px量
Speed: 20,//速度
Side: ["up"],//方向
PauseHeight: 0,//隔多高停一次
PauseWidth: 0,//隔多宽停一次
PauseStep: 1000//停顿时间
};
Object.extend(this.options, options);
},
//转向
Turn: function () {
this.Side.push(this.Side.shift().toLowerCase());
},
//上下滚动
ScrollUpDown: function () {
this.pause = this.pauseHeight;
this.scroller.scrollTop = this.GetScroll(this.scroller.scrollTop, this.heightScroller, this.heightList, this.options.PauseHeight);
this.pauseHeight = this.pause;
var oThis = this;
this.timer = window.setTimeout(function () { oThis.Start(); }, this.speed);
},
//左右滚动
ScrollLeftRight: function () {
this.pause = this.pauseWidth;
this.scroller.scrollLeft = this.GetScroll(this.scroller.scrollLeft, this.widthScroller, this.widthList, this.options.PauseWidth);
this.pauseWidth = this.pause;
var oThis = this;
this.timer = window.setTimeout(function () { oThis.Start(); }, this.speed);
},
//获取设置滚动数据
GetScroll: function (iScroll, iScroller, iList, iPause) {
var iStep = this.options.Step * this.side;
if (this.side > 0) {
if (iScroll >= (iList * 2 - iScroller)) { iScroll -= iList; }
} else {
if (iScroll <= 0) { iScroll += iList; }
}
this.speed = this.options.Speed;
if (iPause > 0) {
if (Math.abs(this.pause) >= iPause) {
this.speed = this.options.PauseStep; this.pause = iStep = 0; this.Turn();
} else {
this.pause += iStep;
}
}
return (iScroll + iStep);
},
//开始
Start: function () {
//方向设置
switch (this.Side[0].toLowerCase()) {
case "right":
if (this.widthList < this.widthScroller) return;
this.side = -1;
this.ScrollLeftRight();
break;
case "left":
if (this.widthList < this.widthScroller) return;
this.side = 1;
this.ScrollLeftRight();
break;
case "down":
if (this.heightList < this.heightScroller) return;
this.side = -1;
this.ScrollUpDown();
break;
case "up":
default:
if (this.heightList < this.heightScroller) return;
this.side = 1;
this.ScrollUpDown();
}
},
//停止
Stop: function () {
clearTimeout(this.timer);
}
};
window.onload = function () {
new Scroller("idScroller", "idScrollMid", { Side: ["up", "left"], PauseHeight: 50, PauseWidth: 400 });
}
</script>
<div id="idScroller" class="Scroller" style=" 400px; height: 50px">
<div style=" 1600px">
<div id="idScrollMid" class="ScrollMid">
<ul>
<li>滚动新闻1</li>
<li>滚动新闻2</li>
<li>滚动新闻3</li>
<li>滚动新闻4</li>
<li>滚动新闻5</li>
<li>滚动新闻6</li>
</ul>
</div>
</div>
</div>
</body>
</html>
转载：原文参考：http://www.cnblogs.com/cloudgamer/