这个案例学习起来还有点吃力，目前还没有独自自己写出来过，贴出来以免忘记。
慕课网该课程原地址：http://www.imooc.com/learn/412
源码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
*{margin: 0;padding: 0;}
body{
padding: 50px 0;
background-color: #FFF;
font-size: 14px;
font-family: 'Avenir Next';
color: #555;
}
.slider .main .main-i,
.slider .main,
.slider{
width: 100%;
height: 400px;
position: relative;
}
/*幻灯片区域*/
.slider .main{
overflow: hidden;
}
/*每一个幻灯片的样式*/
.slider .main .main-i{}
.slider .main .main-i img{
width: 100%;
position: absolute;
left: 0;
top: 0;
z-index: 1;
}
.slider .main .main-i .caption{
position: absolute;
right: 50%;
top: 30%;
z-index: 9;
}
.slider .main .main-i .caption h2{
font-size: 40px;
line-height: 50px;
color: #B5B5B5;
text-align: right;
}
.slider .main .main-i .caption h3{
font-size: 70px;
line-height: 70px;
color: #000000;
text-align: right;
font-family: 'Open Sans Condensed';
}
/*控制按钮区域*/
.slider .ctrl{
width: 100%;
height: 13px;
line-height: 13px;
text-align: center;
position: absolute;
left: 0;
bottom: -13px;
} .slider .ctrl .ctrl-i{
display: inline-block;
width: 150px;
height: 13px;
background-color: #666;
box-shadow: 0 1px 1px rgba(0,0,0,.3);
position: relative;
margin-left: 1px;
}
.slider .ctrl .ctrl-i img{
width: 100%;
position: absolute;
left: 0;
bottom: 50px;
z-index: 1;
/*透明度*/
opacity:0;
/*渐变动画*/
-webkit-transition:all .4s;
} /*hover 到控制按钮的样式*/
.slider .ctrl .ctrl-i:hover{
background-color: #F0F0F0;
}
.slider .ctrl .ctrl-i:hover img{
bottom: 13px;
-webkit-box-reflect:below 0px -webkit-gradient(
linear,
left top,
left bottom,
from(transparent),
color-stop(50%,transparent),
to(rgba(255,255,255,.3))
);
opacity:1;
} /*active 当前展现的状态*/
.slider .ctrl .ctrl-i_active:hover,
.slider .ctrl .ctrl-i_active{
background-color: #000;
}
.slider .ctrl .ctrl-i_active:hover img{
opacity:0;
} /*幻灯片切换的样式*/
.slider .main .main-i{
opacity: 0;
position: absolute;
right:50%;
top: 0;
-webkit-transition:all .5s;
}
.slider .main .main-i h2{
margin-right: 45px;
}
.slider .main .main-i h3{
margin-right: -45px;
}
.slider .main .main-i h2,
.slider .main .main-i h3{
-webkit-transition:all .8s 1s;
} .slider .main .main-i_active{
opacity: 1;
right: 0;
}
.slider .main .main-i_active h2,
.slider .main .main-i_active h3{
margin-right: 0px;
}
</style>
</head>
<body>
<div class="slider">
<!-- 0.修改 VIEW->Template(关键字替换)，增加template id-->
<div class="main" id="template_main">
<div class="main-i " id="main_{{index}}" >
<div class="caption">
<h2>{{h2}}</h2>
<h3>{{h3}}</h3>
</div>
<img src="data:images/{{index}}.jpg" />
</div>
</div>
<div class="ctrl" id="template_ctrl">
<a class="ctrl-i" id="ctrl_{{index}}" href="javascript:switchSlider({{index}});"><img src="data:images/{{index}}.jpg" /></a>
</div>
<script type="text/javascript"> //1.数据定义（实际生产环境中，应有后台给出）
var data = [
{img:1,h1:'Creative',h2:'DUET'},
{img:2,h1:'Friendly',h2:'DEVIL'},
{img:3,h1:'Tranquilent',h2:'COMPATRIOT'},
{img:4,h1:'Insecure',h2:'HUSSLER'},
{img:5,h1:'Loving',h2:'REBEL'},
{img:6,h1:'Passionate',h2:'SEEKER'},
{img:7,h1:'Crazy',h2:'FRIEND'}
]; //2.通用函数
var g = function(id){
if(id.substr(0,1) == "."){
return document.getElementsByClassName(id.substr(1));
}
return document.getElementById(id);
} //3.添加所有幻灯片&对应按钮
function addSliders(){
//3.1获取模板
var tpl_main= g('template_main').innerHTML
.replace(/^\s*/,'')
.replace(/\s*$/,'');
var tpl_ctrl= g('template_ctrl').innerHTML
.replace(/^\s*/,'')
.replace(/\s*$/,'');
//3.2定义最终输出 html的变量
var out_main = []; //所有幻灯片变量
var out_ctrl = []; //所有控制按钮变量
//3.3遍历所有数据，构建最终输出的 HTML
for(i in data){
var _html_main = tpl_main
.replace(/{{index}}/g,data[i].img)
.replace(/{{h2}}/g,data[i].h1)
.replace(/{{h3}}/g,data[i].h2)
.replace(/{{css}}/g,['','main-i_right'][i%2]);
var _html_ctrl = tpl_ctrl
.replace(/{{index}}/g,data[i].img);
out_main.push(_html_main);
out_ctrl.push(_html_ctrl);
}
//3.4吧HTML回写到对应的DOM里面
g('template_main').innerHTML = out_main.join('');
g('template_ctrl').innerHTML = out_ctrl.join(''); //7.增加 #main_background,以免出现空白背景
g('template_main').innerHTML += tpl_main
.replace(/{{index}}/g,'{{index}}');
g('main_{{index}}').id = 'main_background';
} //5.幻灯片切换
function switchSlider(n){
//5.1获得要展现的幻丁片&控制按钮 DOM
var main = g('main_'+n);
var ctrl = g('ctrl_'+n);
//5.2获得所有幻灯片以及控制按钮
var clear_main = g('.main-i');
var clear_ctrl = g('.ctrl-i');
//5.3清除他们的active样式
for(i=0;i<clear_ctrl.length;i++){
clear_main[i].className = clear_main[i].className.replace('main-i_active','');
clear_ctrl[i].className = clear_ctrl[i].className.replace('ctrl-i_active','');
}
for(i=0;i<clear_ctrl.length; i++ ){ //标准的遍历语法，真正意义上的数组对象可以用 for in循环。
clear_main[i].className = clear_main[i].className
.replace(' main-i_active','');
clear_ctrl[i].className = clear_ctrl[i].className
.replace(' ctrl-i_active','');
}
//5.4为当前控制按钮和图片加样式
main.className += ' main-i_active';
ctrl.className += ' ctrl-i_active';
//7.2切换时复制上一张幻灯片到 main_background 中
setTimeout(function(){
g('main_background').innerHTML = main.innerHTML;
},1000)
}
//6.动态调整图片的 margin-top ,使其垂直居中
function movePictures(){
var pictures = g('.picture');
for(i=0; i<pictures.length; i++){
pictures[i].style.marginTop = (-1 * pictures[i].clientHeight/2) + 'px';
}
}
//4.定义何时处理幻灯片输出
window.onload = function(){
addSliders();
switchSlider(2);
setTimeout(function(){
movePictures();
},100);
}
</script> </div>
</body>
</html>