jquery制作一个简单的轮播
效果图：
演示地址：
http://ae6623.cn/demo/slider/index.html
思路：
利用css的定位属性 left 进行调整图片的显示，每次点击上一页下一页按钮的时候，-图片宽度 * index(当前li索引)即可。
代码：
<!DOCTYPE HTML>
<html>
<head>
<!--申明当前页面的编码集-->
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!--网页标题-->
<title>slider</title>
<!--网页关键词-->
<meta name="keywords" content="" />
<!--网页描述-->
<meta name="description" content="" />
<!--适配当前屏幕-->
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" />
<!--禁止自动识别电话号码-->
<meta name="format-detection" content="telephone=no" />
<!--禁止自动识别邮箱-->
<meta content="email=no" name="format-detection" />
<!--iphone中safari私有meta标签,
允许全屏模式浏览,隐藏浏览器导航栏-->
<meta name="apple-mobile-web-app-capable" content="yes" />
<!--iphone中safari顶端的状态条的样式black(黑色)-->
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<style type="text/css">
/*reset 重置*/
body,ul,ol,p,h1,h2,h3,h4,h5,dl,dd,form,input,textarea,
td,th,button,strong,em,select,video,canvas{margin:0;padding:0;}
li{list-style:none;vertical-align:top;}
table{ border-collapse:collapse;}
textarea{resize:none;overflow:auto;}
img{ border:none; vertical-align:middle;}
em{ font-style:normal;}
a{ text-decoration:none;}
a,input{
-webkit-appearance: none;/*屏蔽阴影*/
-webkit-tap-highlight-color:rgba(0,0,0,0);
/*ios android去除自带阴影的样式*/
}
a, img {
/* 禁止长按链接与图片弹出菜单 */
-webkit-touch-callout: none;
}
html, body {
/* 禁止选中文本(如无文本选中需求,此为必选项) */
-webkit-user-select: none;
user-select: none;
}
/*public*/
html {
font-size : 20px;
}
@media only screen and (min-width: 401px){
html {
font-size: 25px !important;
}
}
@media only screen and (min-width: 428px){
html {
font-size: 26.75px !important;
}
}
@media only screen and (min-width: 481px){
html {
font-size: 30px !important;
}
}
@media only screen and (min-width: 569px){
html {
font-size: 35px !important;
}
}
@media only screen and (min-width: 641px){
html {
font-size: 40px !important;
}
}
body{font-family: "Helvetica Neue", Helvetica, "STHeiTi", sans-serif;
overflow-x:hidden; overflow-y:auto; font-size:0.7rem;
}
.clear{zoom:1;}
.clear:after{content:''; display:block; clear:both;}
.fl{float:left;}
.fr{float:right;}
.viewport{ max-width:640px; margin:0 auto; overflow-x:hidden;}
#slider{width:400px;position: relative;overflow: hidden;}
#slider-head{width:400px;}
#silder-head>div{float: left;height: 20px;line-height: 20px;vertical-align: middle;}
#slider-head-button{width:350px;}
#slider-head-button span{font-size: 12px;display: block;float: left;margin:3px;}
#slider-content ul{position:relative;height: 150px;width:2000px;}
#slider-content li{position:relative;width:200px;height: 150px;float: left;margin-right:5px;}
#slider-content .li1{background-color:#3399cc;}
#slider-content .li2{background-color: #cc3333;}
#slider-head-dots{ }
#slider-head-dots li{display: inline-block; width: 10px; height: 10px; margin: 5px 0px; text-indent: -999em; border: 2px solid #fff; border-radius: 6px; cursor: pointer; opacity: .4; -webkit-transition: background .5s, opacity .5s; -moz-transition: background .5s, opacity .5s; transition: background .5s, opacity .5s; background: #000;}
#slider-head-dots li.active,li:hover {
background: #000;
opacity: 1;
}
</style>
</head>
<body>
<div>
<div id="main">
<div id="slider">
<div id="silder-head">
<div id="slider-head-button"><span class="l"> <a href="#" class="pri"><</a></span><span class="r"> <a href="#" class="next">></a> </span></div>
<div id="slider-head-dots">
<ol class="dots">
<li class="dot active">1</li>
<li class="dot">2</li>
</ol>
</div>
</div>
<div class="clear"></div>
<div id="slider-content">
<ul>
<li class="li1">1</li>
<li class="li2">2</li>
<li class="li1">3</li>
<li class="li2">4</li>
</ul>
</div>
</div>
</div>
</div>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript">
$(function() {
console.log('author:Luo Yu');
//拿到小圆点
var nav = $('#slider-head-dots ol').find('li');
//轮播内容
var content = $("#slider-content").find('ul');
//按钮 左右剪头，我没用图片，用了大于号小于号临时将就一下
var head_button = $("#slider-head-button").find("a");
//第一张图片的宽度
var imgWidth = content.find("li").eq(0).width() + 5;
//点击了小圆点
nav.click(function() {
var me = $(this);
var index = me.index();
nav.removeClass("active");
me.addClass("active");
//轮播
content.animate({
"left": -imgWidth * 2 * index
});
});
//点击了左右剪头
head_button.click(function(){
var me = $(this);
var index = me.attr("class");
if(index == "pri"){
index = 0;
}else{
index = 1;
}
nav.removeClass("active");
nav.eq(index).addClass("active");
content.animate({
"left": -imgWidth * 2 * index
});
});
});
</script>
</body>
</html>
