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[经验分享] 四种JS图片切换幻灯焦点图代码，来自淘宝网

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发表于 2011-12-30 19:17:38 |只看该作者 |倒序浏览

四各JS图片切换幻灯焦点图代码，来自淘宝网的网页特效，一种是淡入淡出式，另一种是上下滚动式，第三种是左右移动式，第四种与第一种切换方式几乎相同，同为渐入渐出的，四种方式根据你的喜好自由选择，另外也是很不错的学习参考。
　　示例：
<!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>焦点图</title>

<style type="text/css">

body {margin:0px;padding:0px;background:url(/uploads/allimg/1109/bg.jpg);}

ul, li {margin:0px;padding:0px;float:left;list-style-type:none;}

.frame {width:1010px;height:auto;overflow:hidden;margin:40px auto 0 auto;}

.box {width:490px;height:170px;padding:1px;float:left;display:inline;margin:5px;background:#fff;position:relative;border:1px solid #dedede;}

.list {width:490px;height:170px;float:left;overflow:hidden; position:relative;}

.list ul {position:absolute;top:0px;left:0px;}

.list li {width:490px;height:170px;float:left;}

.list li.opacity {position:absolute;top:0px;left:0px;opacity:0;filter:alpha(opacity:0)}

.but {width:105px;height:16px;right:1px;bottom:5px;position:absolute;z-index:1;}

.but li {width:14px;height:14px;float:left;color:#fff;font-size:10px;text-align:center;line-height:14px;font-family:Verdana;background:#bbb;display:inline;margin:0 5px 0 0;cursor:pointer;border:1px solid #a9abaa;}

.but li.hove {background:#ff902a;border:1px solid #ff6502;}

</style>

<script type="text/javascript">

function $(id){

return typeof id === "string" ? document.getElementById(id) : id;

}

function $$(oParent, elem){

return (oParent || document).getElementsByTagName(elem);

}

function $$$(oParent, sClass){

var aElem = $$(oParent, '*');

var aClass = [];

var i = 0;

for(i=0;i<aElem.length;i++)if(aElem.className == sClass)aClass.push(aElem);

return aClass;

}

function Slide(){

this.initialize.apply(this, arguments);

}

Object.extend = function(destination, source){

for (var property in source) {

destination[property] = source[property];

}

return destination;

};

Slide.prototype = {

initialize : function(obj, list, but, hove, onEnd){

if($(obj)){

this.obj = $(obj);

this.oList = $$$(this.obj, list)[0];

this.oUl = $$(this.oList, 'ul')[0];

this.aList = $$(this.oList, 'li');

this.aListH = this.aList[0].offsetHeight;

this.aListW = this.aList[0].offsetWidth;

this.oBut = $$$(this.obj, but)[0];

this.aBut = $$(this.oBut, 'li');

this.oEve(onEnd);

this.oAction = this.onEnd.action;

this.onEnd.method == 'mouseover' ? this.method = "mouseover" : this.method = "click";

this.onEnd.autoplay == 'stop' ? this.autoplay = "stop" : this.autoplay = "play";

if(this.oAction == 'top'){

this.oUl.style.height = this.aListH * this.aList.length +'px';

}else if(this.oAction == 'left'){

this.oUl.style.width = this.aListW * this.aList.length +'px';

}else if(this.oAction == 'opacity'){

this.oUl.style.height = this.aListH +'px';

var i = 0;

for(i=0;i<this.aList.length;i++){

this.aList.style.position = 'absolute';

this.aList.className = 'opacity';

}

this.aList[0].className = '';

}else{

this.oUl.style.height = this.aListH * this.aList.length +'px';

}

this.getEvent(hove);

}

},

oEve: function(onEnd){

this.onEnd = {

method : 'click',

autoplay: 'stop'

};

Object.extend(this.onEnd, onEnd || {});

},

addEvent : function(oElm, strEvent, fuc) {

window.addEventListener ? oElm.addEventListener(strEvent, fuc, false) : oElm.attachEvent('on' + strEvent, fuc);

},

getEvent : function(hove) {

var _this = this;

var i = iNow = 0;

for(i=0;i<this.aBut.length;i++){

(function(){

var j = i;

_this.addEvent(_this.aBut[j], _this.method, function(){

_this.fnClick(j, hove);

_this.autoPlayTab(j, hove);

});

})();

}

this.autoPlayTab(i, hove);

},

autoPlayTab : function(iNow, hove){

if(this.autoplay == 'play'){

var _this = this;

this.iNow = iNow;

this.obj.onmouseover = function(){

clearInterval(_this.timer);

};

this.obj.onmouseout = function(){

clearInterval(_this.timer);

_this.timer = setInterval(playTab,3000);

};

clearInterval(_this.timer);

_this.timer = setInterval(playTab,3000);

function playTab(){

if(_this.iNow == _this.aBut.length)_this.iNow = 0;

_this.fnClick(_this.iNow, hove);

_this.iNow++;

}

}

},

fnClick : function(oBut, hove){

var i = 0;

for(i=0;i<this.aBut.length;i++)this.aBut.className = '';

this.aBut[oBut].className = hove;

if(this.oAction == 'top'){

this.sMove(this.oUl, {top:-(this.aListH * oBut)});

}else if(this.oAction == 'left'){

this.sMove(this.oUl, {left:-(this.aListW * oBut)});

}else if(this.oAction == 'opacity'){

var i = 0;

for(i=0;i<this.aList.length;i++){

this.sMove(this.aList, {opacity:0});

}

this.sMove(this.aList[oBut], {opacity:100});

}else{

this.sMove(this.oUl, {top:-(this.aListH * oBut)});

}

},

getStyle : function(obj, attr)

{

return obj.currentStyle?obj.currentStyle[attr]:getComputedStyle(obj, false)[attr];

},

sMove : function(obj, json, onEnd){

var _this = this;

clearInterval(obj.timer);

obj.timer = setInterval(function(){

_this.dMove(obj, json, onEnd);

},30);

},

dMove : function(obj, json, onEnd){

this.attr = '';

this.bStop = true;

for(this.attr in json){

this.iCur = 0;

this.attr == 'opacity' ? this.iCur = parseInt(parseFloat(this.getStyle(obj, this.attr))*100) : this.iCur = parseInt(this.getStyle(obj, this.attr));

this.iSpeed = (json[this.attr] - this.iCur) / 7;

this.iSpeed = this.iSpeed > 0 ? Math.ceil(this.iSpeed) : Math.floor(this.iSpeed);

if(json[this.attr] != this.iCur)this.bStop = false;

if(this.attr == 'opacity'){

obj.style.filter = 'alpha(opacity:' + (this.iCur + this.iSpeed) +')';

obj.style.opacity = (this.iCur + this.iSpeed ) / 100;

}else{

obj.style[this.attr] = this.iCur + this.iSpeed + 'px';

}

}

if(this.bStop){

clearInterval(obj.timer);

if(onEnd)onEnd();

}

}

};

</script>

<script type="text/javascript">

window.onload = function(){

new Slide('box', 'list', 'but', 'hove', {action : 'opacity'});

new Slide('box1', 'list', 'but', 'hove', {method : 'mouseover', action : 'top', autoplay : 'play'});

new Slide('box2', 'list', 'but', 'hove', {action : 'left', autoplay : 'play'});

new Slide('box3', 'list', 'but', 'hove', {action : 'opacity', autoplay : 'play'});

};

</script>

</head>

<body>

<div class="frame">

<div class="box" id="box">

<div class="list">

<ul>

<li><img src="/uploads/allimg/1109/01.png" /></li>

<li><img src="/uploads/allimg/1109/02.jpg" /></li>

<li><img src="/uploads/allimg/1109/03.jpg" /></li>

<li><img src="/uploads/allimg/1109/04.jpg" /></li>

<li><img src="/uploads/allimg/1109/05.jpg" /></li>

</ul>

</div>

<div>

<div class="but">

<ul>

<li class="hove">1</li>

<li>2</li>

<li>3</li>

<li>4</li>

<li>5</li>

</ul>

</div>

</div>

</div>

<div class="box" id="box1">

<div class="list">

<ul>

<li><img src="/uploads/allimg/1109/01.png" /></li>

<li><img src="/uploads/allimg/1109/02.jpg" /></li>

<li><img src="/uploads/allimg/1109/03.jpg" /></li>

<li><img src="/uploads/allimg/1109/04.jpg" /></li>

<li><img src="/uploads/allimg/1109/05.jpg" /></li>

</ul>

</div>

<div>

<div class="but">

<ul>

<li class="hove">1</li>

<li>2</li>

<li>3</li>

<li>4</li>

<li>5</li>

</ul>

</div>

</div>

</div>

<div class="box" id="box2">

<div class="list">

<ul>

<li><img src="/uploads/allimg/1109/01.png" /></li>

<li><img src="/uploads/allimg/1109/02.jpg" /></li>

<li><img src="/uploads/allimg/1109/03.jpg" /></li>

<li><img src="/uploads/allimg/1109/04.jpg" /></li>

<li><img src="/uploads/allimg/1109/05.jpg" /></li>

</ul>

</div>

<div>

<div class="but">

<ul>

<li class="hove">1</li>

<li>2</li>

<li>3</li>

<li>4</li>

<li>5</li>

</ul>

</div>

</div>

</div>

<div class="box" id="box3">

<div class="list">

<ul>

<li><img src="/uploads/allimg/1109/01.png" /></li>

<li><img src="/uploads/allimg/1109/02.jpg" /></li>

<li><img src="/uploads/allimg/1109/03.jpg" /></li>

<li><img src="/uploads/allimg/1109/04.jpg" /></li>

<li><img src="/uploads/allimg/1109/05.jpg" /></li>

</ul>

</div>

<div>

<div class="but">

<ul>

<li class="hove">1</li>

<li>2</li>

<li>3</li>

<li>4</li>

<li>5</li>

</ul>

</div>

</div>

</div>

</div>

</body>

</html><br /><center>如不能显示效果，请按Ctrl+F5刷新本页，更多网页代码：<a href='http://www.veryhuo.com/' target='_blank'>http://www.veryhuo.com/</a></center>

文章源自：烈火网，原文：http://www.veryhuo.com/a/view/38677.html