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首页 / 脚本样式 / JavaScript / jquery实现每个数字上都带进度条的幻灯片

记得亚马逊没改版之前,首页的幻灯片我很喜欢,每个数字上面都带有进度条。
闲的无聊,自己实现了一个。用的jquery。
主要用到animate()方法,
因为有一个进度条的播放过程。
不支持ie6,当然,改改还是可以的。
演示
下载
先看下效果图
 
看代码吧:
复制代码 代码如下:
<!DOCTYPE html>
<html>
<head>
<title>slide play with loadbar--by loethen</title>
<meta charset="utf-8">
<style>
*{padding: 0;margin:0;}
ul li{list-style: none;}
.slideplay ,.slideshow{
position: relative;
}
.slideshow li{
position: absolute;
left: 0;
top: 0;
display: none;
}
.loadbar{
position: absolute;
bottom: 60px;
left: 250px;
z-index: 9;
}
.loadbar li{
width: 40px;
height: 20px;
float: left;
position: relative;
margin-right: 5px;
border-radius: 2px;
border: 1px solid #e5f9ff;
}
.loadbar span{
position: absolute;
left: 0;
top: 0;
height: 20px;
width: 40px;
text-align: center;
z-index: 12;
cursor: pointer;
color: #fff;
border-radius: 2px;
}
.loadbar em{
position: absolute;
left: 0;
top: 0;
height: 20px;
background: #31d81a;
z-index: 10;
border-radius: 2px;
opacity: 0.7
}
.zindex{
z-index: 1;
}
</style>
<script src="js/jquery.min.js"></script>
</head>
<body>
<div id="slideplay" class="slideplay">
<ul class="slideshow">
<li><img src="images/a.jpg" alt=""></li>
<li><img src="images/b.jpg" alt=""></li>
<li><img src="images/c.jpg" alt=""></li>
<li><img src="images/d.jpg" alt=""></li>
<li><img src="images/e.jpg" alt=""></li>
</ul>
<ul class="loadbar clearfix">
<li>
<span>1</span>
<em></em>
</li>
<li>
<span>2</span>
<em></em>
</li>
<li>
<span>3</span>
<em></em>
</li>
<li>
<span>4</span>
<em></em>
</li>
<li>
<span>5</span>
<em></em>
</li>
</ul>
</div>
<script type="text/javascript">
$(function(){
var slide = $(".slideplay"),
ulShow = $(".slideshow"),
sLi = ulShow.find("li"),
bLi = $(".loadbar li"),
len = sLi.length;
var option ={
speed:3000,
barWidth:40
},
barSpeed = option.speed-100;
var w = sLi.first().width(),
h = sLi.first().height();
var flag = 0,
timer = null;
ulShow.css({
width:w+"px",
height:h+"px"
});
slide.css({
width:w+"px",
height:h+"px"
});
init();
function init(){
sLi.eq(flag).addClass("zindex").show();
bLi.eq(flag).find("em").animate({width:option.barWidth},barSpeed);
timer = setTimeout(function(){
next();
},option.speed);
ulShow.on("mouseover",doStop);
ulShow.on("mouseleave",doAuto);
bLi.on("mouseover",handPattern);
}
function handPattern(){
doStop();
flag = $(this).index();
imgMove();
bLi.find("em").css("width",0);
bLi.eq(flag).find("em").width(option.barWidth);
}
function doStop(){
timer && clearTimeout(timer);
bLi.eq(flag).find("em").stop();
}
function doAuto(){
var em = bLi.eq(flag).find("em"),
w = em.width(),
leftW = option.barWidth - w ,
sec = (leftW * barSpeed)/option.barWidth;
em.animate({width:option.barWidth},sec,function(){
if(flag==len-1){
em.width(0);
next();
}else{
next();
}
});
}
function next(){
flag++;
flag==len && (flag=0);
doMove();
}
function doMove(){
imgMove();
loadbarMove();
}
function imgMove(){
sLi.eq(flag).addClass("zindex").fadeIn("slow")
.siblings().removeClass("zindex").fadeOut("slow");
}
function loadbarMove(){
bLi.eq(flag).find("em").
animate({width:option.barWidth},barSpeed,function(){
if(flag==len-1){
bLi.find("em").width(0);
next();
}else{
next();
}
});
}
})
</script>
</body>
</html>