运用jQuery定时器的原理实现banner图片切换

主要运用了定时器的原理，bind,trigger应用等

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<title>banner切换实现</title>

<style type="text/css">

/*

* @description: banner切换样式

* @author: lanfeng(beryl)

* @time:2013-02-26

*/

/* reset*/

*{ margin: 0; padding: 0;}

body{font:12px/1.5 Tahoma,'B8BF53',arial,Tahoma,helvetica,sans-serif; color:#333333;background-color:#ffffff;position:relative; }

h1,h2,h3,h4,h5,h6{font-size:100%}

address,em{font-style:normal;}

code,kbd,pre,samp{font-family:courier new,courier,monospace;}

ul,ol{list-style:none outside none;}

fieldset,img{border:0;}

img{vertical-align:middle}

table{border-collapse:collapse;border-spacing:0;font-size:inherit;*font-size:100%;}

input,button,textarea,select{vertical-align:middle;font:100% Helvetica,Arial,sans-serif; color:inherit}

.clearfix:after{content:'.';display:block;height:0;clear:both;visibility:hidden;}

.clearfix{*zoom:1;}

.clear{font-size:0;line-height:0;height:0;clear:both;visibility:hidden;overflow:hidden;}

.d-ftab{ width:510px; height: 180px;position: relative; margin: 100px auto;}

.d-fShow ul li{ float: left; width: 510px; height: 180px;}

.d-fShow{ width: 510px; height: 180px; overflow: hidden;}

.d-fShow img{ width: 510px; height: 180px; float: left;}

.d-fs-control{ position: absolute; width:510px; position: absolute; left: 0; bottom: 0; height: 25px; line-height: 25px;

background: rgba(0,0,0,0.4);

filter:progid:DXImageTransform.Microsoft.Gradient(GradientType=0,StartColorStr='#66000000',

EndColorStr='#66000000') ; }

:root .d-fs-control{filter:progid:DXImageTransform.Microsoft.Gradient(GradientType=0,StartColorStr='#66000000'

,EndColorStr='#66000000')9 ;}

.d-fs-control ul{ position: absolute; bottom:3px; right: 5px; height: 16px;}

.d-fs-control ul li{width:16px;height:16px; background:#777675;border-radius: 2px 2px 2px 2px; float:left;margin-left:5px;

color:#dcdcdc;text-align:center;font-weight:700;cursor:pointer;line-height:16px;filter: alpha(opacity=70); opacity: 0.7;}

.d-fs-control ul li:hover,.d-fs-control ul li.select{background:#ffffff;color:#ff6700;}

</style>

<script type="text/javascript" src="js/jquery-1.4.2.min.js"></script>

<script type="text/javascript">

$(function(){

var wrap =$('.d-ftab');

var imgs = wrap.find('.d-fShow ul >li');

var len=imgs.length ;

var tabTime=100;

var outTime=4000;

var select='select';

var num =0 ;

var interval;

var type = 'click';

var btns=wrap.find('.d-fs-control ul>li');

btns.bind(type,function(){

var _this=$(this);

_this.addClass('select').siblings ().removeClass('select');

num=_this.prevAll().length;

imgs.stop().eq(num).fadeTo(tabTime,1) ;

imgs.not(':eq('+num+')').filter(':visible').fadeOut(tabTime) ;

return false;

}).eq(num).trigger(type);

var interFunc=function(){

num=(num+1)%len;

btns.eq(num).triggerHandler(type);

}

wrap.bind('mouseover',function(){

clearInterval(interval);

}).bind('mouseout',function(){

interval=setInterval(interFunc,outTime)

})

})

</script>

</head>

<body>

<div class="d-ftab">

<div class="d-fShow">

<ul>

<li>

<a href="#"><img alt="" src=" images/1.jpg"/>

</a>

</li>

<li >

<a href="#"><img alt="" src="images/2.png">

</a>

</li>

<li>

<a href="#"><img alt="" src="images/3.jpg">

</a>

</li>

<li>

<a href=""><img alt="" src="images/4.jpg">

</a>

</li>

<li>

<a href="#"><img alt="" src="images/5.jpg">

</a>

</li>

</ul>

</div>

<div class="d-fs-control">

<ul>

<li>1</li>

<li>2</li>

<li>3</li>

<li>4</li>

<li class="select">5</li>

</ul>

</div>

</div>

</body>

</html>

效果如下图：
运用jQuery定时器的原理实现banner图片切换

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运用jQuery定时器的原理实现banner图片切换

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