大家好，对JavaScript 指定宽度高度的无间断滚动实现代码感兴趣的小伙伴，下面一起跟随三零脚本的小编来看看JavaScript 指定宽度高度的无间断滚动实现代码的例子吧。
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<html xmlns="http://www.w3.org/1999/xhtml">
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<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>JavaScript 无缝上下滚动加定高定宽停顿效果(兼容ie/ff)</title>
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<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 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.pause = 0; //定高(宽)
this.side = 0;//参数 //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));
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 = {//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
//当上下和左右一起使用时必须设置PauseHeight和PauseWidth来设置转向位置
PauseStep: 3000//停顿时间(PauseHeight或PauseWidth大于0该参数才有效) };
Object.extend(this.options, options || {}); }, //转向
Turn: function() { //通过设置方向数组的排列来转向
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; //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); 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() { //document.getElementById("test").innerHTML+=sTurn+","; //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); } };
</SCRIPT> <STYLE> body {font-size:12px;} .Scroller {line-height:20px; border:1px solid #D4D4D4; padding:0px 10px; height:20px; width:400px;} .Scroller *{margin:0px; padding:0px;} .ScrollMid {float:left;} .ScrollMid ul{width:400px;float:left;} .ScrollMid li{list-style:none; float:left; width:390px; padding-left:10px;line-height:20px; }
</STYLE>
<DIV class=Scroller id=idScroller> <DIV style="WIDTH: 400px"> <DIV class=ScrollMid id=idScrollMid> <UL> <LI><a href="https://www.q3060.com" target="_blank">顺德于1993年被批准为广东省综合改革试点。 </a></LI> <LI><a href="https://www.q3060.com" target="_blank">2006年顺德成为首个GDP超过1000亿的县级行政单位。 </a></LI> <LI><a href="https://www.q3060.com" target="_blank">2000至2003年顺德均在中国百强县排名中位居榜首。 </a></LI> <LI><a href="https://www.q3060.com" target="_blank">2005年顺德实现国内生产总值856.11亿元。 </a></LI></UL></DIV></DIV></DIV> <SCRIPT> new Scroller("idScroller", "idScrollMid",{ Side:["up",""], PauseHeight:20, PauseWidth:400 }); </SCRIPT>
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