js上下左右无缝滚动加悬停
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<!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>javascript 无缝上下(左右)滚动加定高(定宽)停顿效果(兼容ie/ff)</title>
</head>
<body>
<script type="text/javascript">
var $ = function (id) {
return "string" == typeof id ? 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) {
oTarget.addEventListener(sEventType, fnHandler, false);
} else if (oTarget.attachEvent) {
oTarget.attachEvent("on" + sEventType, fnHandler);
} else {
oTarget["on" + sEventType] = fnHandler;
}
};
var Scroller = Class.create();
Scroller.prototype = {
initialize: function(idScroller, idScrollMid, options) {
var oScroll = this, oScroller = $(idScroller), oScrollMid = $(idScrollMid);
this.SetOptions(options);
this.Scroller = oScroller;
this.Speed = this.options.Speed;
this.timer = null;
this.Pause = 0;
//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;
//js取不到css设置的height和width
oScroller.style.overflow = "hidden";
oScrollMid.appendChild(oScrollMid.cloneNode(true));
//方向设置
switch (this.options.Side.toLowerCase()) {
case "right" :
if(this.widthList <= this.widthScroller) return;
this.Scroll = this.ScrollLeftRight;
this.side = -1;
break;
case "left" :
if(this.widthList <= this.widthScroller) return;
this.Scroll = this.ScrollLeftRight;
this.side = 1;
break;
case "down" :
if(this.heightList <= this.heightScroller) return;
this.Scroll = this.ScrollUpDown;
this.side = -1;
break;
case "up" :
default :
if(this.heightList <= this.heightScroller) return;
this.Scroll = this.ScrollUpDown;
this.side = 1;
}
addEventHandler(oScroller, "mouseover", function() { oScroll.Stop(); });
addEventHandler(oScroller, "mouseout", function() { oScroll.Start(); });
this.Start();
},
//设置默认属性
SetOptions: function(options) {
this.options = {//默认值
Step: 1,//每次变化的px量
Speed: 20,//速度(越大越慢)
Side: "up",//滚动方向:"up"是上，"down"是下，"left"是左，"right"是右
PauseHeight: 0,//隔多高停一次
PauseWidth: 0,//隔多宽停一次
PauseStep: 1000//停顿时间(PauseHeight或PauseWidth大于0该参数才有效)
};
Object.extend(this.options, options || {});
},
//上下滚动
ScrollUpDown: function() {
this.Scroller.scrollTop = this.GetScroll(this.Scroller.scrollTop, this.heightScroller, this.heightList, this.options.PauseHeight);
var oScroll = this;
this.timer = window.setTimeout(function(){ oScroll.Scroll(); }, this.Speed);
},
//左右滚动
ScrollLeftRight: function() {
//document.getElementById("test").innerHTML+=iStep+",";
//注意:scrollLeft超过1400会自动变回1400 注意长度
this.Scroller.scrollLeft = this.GetScroll(this.Scroller.scrollLeft, this.widthScroller, this.widthList, this.options.PauseWidth);
var oScroll = this;
this.timer = window.setTimeout(function(){ oScroll.Scroll(); }, this.Speed);
},
//获取设置滚动数据
GetScroll: function(iScroll, iScroller, iList, iPause) {
var oScroll = this, 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;
} else {
this.Pause += iStep;
}
}
return (iScroll + iStep);
},
//开始
Start: function() {
this.Scroll();
},
//停止
Stop: function() {
clearTimeout(this.timer);
}
};
window.onload = function(){
new Scroller("idScroller", "idScrollMid",{ Side:"up", PauseHeight:25 });
new Scroller("idScroller1", "idScrollMid1",{ Side:"right", PauseWidth:250, Speed:10 });
}
</script>
<style>
.Scroller *{margin:0px; padding:0px;}
.Scroller {line-height:25px;overflow:hidden; border:1px solid #000000;}
#idScrollMid ul{width:500px;}
#idScrollMid li{width:250px;float:left; overflow:hidden; list-style:none;}
#idScrollMid1 {float:left;}
#idScrollMid1 ul{width:250px;float:left;overflow:hidden;}
#idScrollMid1 li{list-style:none;}
</style>
<div id="idScroller" class="Scroller" style="width:500px; height:50px;">
<div id="idScrollMid">
<ul>
<li><a href="http://shundebk.cn/">111111111111111111111</a></li>
<li><a href="http://shundebk.cn/">211111111111111111111</a></li>
<li><a href="http://shundebk.cn/">311111111111111111111</a></li>
<li><a href="http://shundebk.cn/">411111111111111111111</a></li>
<li><a href="http://shundebk.cn/">511111111111111111111</a></li>
<li><a href="http://shundebk.cn/">611111111111111111111</a></li>
</ul>
<div style="clear:both;"></div>
</div>
</div>
<br />
<br />
<br />
<div id="idScroller1" class="Scroller" style="width:500px; height:50px;">
<div style="width:2000px">
<div id="idScrollMid1">
<ul>
<li> <a href="http://shundebk.cn/">1111111111111111111111</a></li>
<li> <a href="http://shundebk.cn/">2111111111111111111111</a></li>
</ul>
<ul>
<li> <a href="http://shundebk.cn/">1211111111111111111111</a></li>
<li> <a href="http://shundebk.cn/">2211111111111111111111</a></li>
</ul>
<ul>
<li> <a href="http://shundebk.cn/">1311111111111111111111</a></li>
<li> <a href="http://shundebk.cn/">2311111111111111111111</a></li>
</ul>
</div>
</div>
</div>
<div id="test"></div>
</body>
</html>
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