JS实现的另类手风琴效果网页内容切换代码

本文实例讲述了JS实现的另类手风琴效果网页内容切换代码。分享给大家供大家参考。具体如下：

这是一款以海贼王为题材的另类手风琴效果，用到三张背景图片，请顺着代码自已下载吧，多看看类似特效的编写思路，对于提高你的Js编程水平有不少帮助的。

运行效果截图如下：

在线演示地址如下：

http://demo.jb51.net/js/2015/js-sfq-web-cha-style-codes/

具体代码如下：

<!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>海贼王</title>
<style type="text/css">
body{margin:0px;padding:0px;overflow:hidden;background:#151515;}
#box{width:710px;height:350px;padding:2px 0 2px 2px;margin:210px auto;background:#111;}
#box ul{margin:0px;padding:0px;float:left;}
#box li{width:75px;height:350px;float:left;display:inline;margin-right:2px;overflow:hidden;list-style-type:none;position:relative;}
.pos1, .pos2, .pos3, .pos4, .pos5{width:75px;height:350px;float:left;text-decoration:none;}
.pos1 span, .pos2 span, .pos3 span, .pos4 span, .pos5 span{width:75px;height:350px;float:left;top:0px;left:0px;filter:alpha(opacity=10);opacity:0.1;overflow:hidden;position:absolute; text-decoration:none;}
.pos1 span.preview{background:url(images/bw.jpg) no-repeat;}
.pos1 span.img_pre{left:75px;background:url(images/color.jpg) no-repeat;}
.pos2 span.preview{background:url(images/bw.jpg) no-repeat -75px 0;}
.pos2 span.img_pre{left:75px;background:url(images/color.jpg) no-repeat -75px 0;}
.pos3 span.preview{background:url(images/bw.jpg) no-repeat -152px 0;}
.pos3 span.img_pre{left:75px;filter:alpha(opacity=100);opacity:1;background:url(images/color.jpg) no-repeat -152px 0;}
.pos4 span.preview{background:url(images/bw.jpg) no-repeat -228px 0;}
.pos4 span.img_pre{left:75px;background:url(images/color.jpg) no-repeat -228px 0;}
.pos5 span.preview{background:url(images/bw.jpg) no-repeat -303px 0;}
.pos5 span.img_pre{left:75px;background:url(images/color.jpg) no-repeat -303px 0;}
.inner {width:280px;height:310px;float:left;padding:20px;background:#fff;overflow:hidden;border-right:5px solid #f0f0f0; position:absolute;top:0px;left:75px;}
.inner h2{width:280px;height:60px;float:left;color:#555555;font-family:"微软雅黑";line-height:60px;font-size:18px;text-indent:10px;margin:0px;padding:0px;background:url(images/stripe_light.gif);}
.inner h3{width:280px;height:40px;float:left;color:#fff;font-family:"微软雅黑";line-height:40px;font-size:14px;text-indent:10px;margin:0px;padding:0px;background:url(images/stripe.gif);}
.inner p{width:260px;height:200px;float:left;color:#000;font-family:"微软雅黑";line-height:25px;font-size:12px;margin:0px;padding:0px 10px;}
</style>
<script type="text/javascript">
window.onload = function(){
 var oBox = document.getElementById('box');
 var aLi = oBox.getElementsByTagName('li');
 var aA = oBox.getElementsByTagName('a');
 var aPrev = getClass(oBox, 'preview');
 var aImg = getClass(oBox, 'img_pre');
 var i = 0;
 for(i=0;i<aA.length;i++){
  aA[i].index = i;
  aA[i].onclick = function(){
   for(i=0;i<aLi.length;i++){
    if(aLi[this.index].style.width != '400px')startMove(aLi[i], {width:75}, 5);
    startMove(aPrev[i], {opacity:10}, 5);
    startMove(aImg[i], {opacity:0, left:75}, 5);
   }
   if(aLi[this.index].style.width != '400px'){
    startMove(oBox, {width:710}, 5);
    startMove(aImg[this.index], {opacity:100, left:0}, 5);
    startMove(aLi[this.index], {width:400}, 5);
   }else{
    startMove(aLi[this.index], {width:75}, 5);
    for(i=0;i<aLi.length;i++){
     startMove(aPrev[i], {opacity:100}, 5);
    }
    startMove(oBox, {width:385}, 5);
   }
  };
 }
};
function getClass(oParent, sClass){
 var aElem = oParent.getElementsByTagName('*');
 var aClass = [];
 var i = 0;
 for(i=0;i<aElem.length;i++)if(aElem[i].className == sClass)aClass.push(aElem[i]);
 return aClass;
}
function startMove(obj, json, iT, fnEnd){
 if(obj.timer)clearInterval(obj.timer);
 obj.timer = setInterval(function (){
  doMove(obj, json, iT, fnEnd);
 }, 30);
}
function getStyle(obj, attr){
 return obj.currentStyle ? obj.currentStyle[attr] : getComputedStyle(obj, false)[attr];
}
function doMove(obj, json, iT, fnEnd){
 var iCur = 0;
 var attr = '';
 var bStop = true;
 for(attr in json){
  attr == 'opacity' ? iCur = parseInt(100*parseFloat(getStyle(obj, 'opacity'))) : iCur = parseInt(getStyle(obj, attr));
  if(isNaN(iCur))iCur = 0;
  var iSpeed = (json[attr]-iCur) / iT;
  iSpeed = iSpeed > 0 ? Math.ceil(iSpeed) : Math.floor(iSpeed);
  if(parseInt(json[attr])!=iCur)bStop = false;
  if(attr=='opacity'){
   obj.style.filter = "alpha(opacity:"+(iCur+iSpeed)+")";
   obj.style.opacity = (iCur + iSpeed) / 100;
  }else{
   attr == 'zIndex' ? obj.style[attr] = iCur + iSpeed : obj.style[attr] = iCur + iSpeed +'px';
  }
 }
 if(bStop){
  clearInterval(obj.timer);
  obj.timer = null;
  if(fnEnd)fnEnd();
 }
}
</script>
</head>
<body>
<div id="box">
 <li>
  <a href="javascript:;" class="pos1">
  <span class="preview"></span>
  <span class="img_pre"></span>
 </a>
 <div class="inner">
  <h2>乌索普</h2>
  <h3>草帽海贼团【狙击手】</h3>
  <p>悬赏：3000万（司法岛事件）</p>
 </div>
 </li>
 <li>
  <a href="javascript:;" class="pos2">
  <span class="preview"></span>
  <span class="img_pre"></span>
 </a>
 <div class="inner">
  <h2>罗罗诺亚·索隆</h2>
  <h3>草帽海贼团【剑士】</h3>
  <p>悬赏：6千万（阿拉巴斯坦事件）→1亿2000万（司法岛事件）</p>
 </div>
 </li>
 <li style="width:400px;">
  <a href="javascript:;" class="pos3">
  <span class="preview"></span>
  <span class="img_pre" style="left:0px;"></span>
 </a>
 <div class="inner">
  <h2>蒙其·D·路飞</h2>
  <h3>草帽海贼团【船长】</h3>
  <p>恶魔果实：橡胶果实<br />悬赏：3千万（可可亚西村事件）→1亿（阿拉巴斯坦事件）→3亿（司法岛事件)→4亿（顶上战争后）</p>
 </div>
 </li>
 <li>
  <a href="javascript:;" class="pos4">
  <span class="preview"></span>
  <span class="img_pre"></span>
 </a>
 <div class="inner">
  <h2>娜美</h2>
  <h3>草帽海贼团【航海士】</h3>
  <p>悬赏：1600万（司法岛事件）</p>
 </div>
 </li>
 <li>
  <a href="javascript:;" class="pos5">
  <span class="preview"></span>
  <span class="img_pre"></span>
 </a>
 <div class="inner">
  <h2>香吉士</h2>
  <h3>草帽海贼团【厨师】</h3>
  <p>悬赏：7700万（司法岛事件）</p>
 </div>
 </li>
</div>
</body>
</html>

希望本文所述对大家的JavaScript程序设计有所帮助。