我按照您的步骤写的，但是没有出现效果
qq_Agoni轩_0
2016-04-12 21:27
现在就是没有预览图这块有了，但是幻灯片这块的图片和标题都不显示
1回答
-
- qq_请叫我曼哥好么_0
- 2017-04-14 21:28:23
给你看我的代码，可以运行
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html">
<title>Preview Slideshow</title>
<style type="text/css">
*{
padding: 0;
margin: 0;
}
body{
padding: 50px 0;
background-color:#FFF;
font-size: 14px;
font-family: 'Avenir Next';
color:#555;
-webkit-font-smoothing: antialiased;
}
.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 img{
width: 100%;
position: absolute;
left: 0;
top: 50%;
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{
position: relative;
display: inline-block;
width: 150px;
height: 13px;
background-color: #666;
box-shadow: 0 1px 1px rgba(0,0,0,.3);
margin-left: 1px;
}
.slider .ctrl .ctrl-i img{
width: 100%;
position: absolute;
left: 0;
bottom: 50px;
z-index: 1;
opacity: 0;
-webkit-transition: all .2s;
}
/*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;
}
/*幻灯片切换样式*/
.slider .main .main-i{
opacity: 0;
position: absolute;
right: 50%;
top: 0;
-webkit-transition: all .5s;
z-index: 2;
}
.slider .main .main-i_right{
right: -50%;
}
.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{
opacity: 0;
-webkit-transition: all 1s .8s;
}
#main_background,
.slider .main .main-i_active{
opacity: 1;
right: 0;
z-index: 2;
}
#main_background{
z-index: 1;
}
.slider .main .main-i_active h2,
.slider .main .main-i_active h3{
margin-right: 0;
opacity: 1;
}
.slider .main .main-i .caption{
margin-right: 13%;
}
</style>
</head>
<body>
<div class="slider">
<!--0.修改VIEW->Temolate(关键字替换)，增加template id-->
<div class="main" id="template_main">
<div class="main-i main-i_active {{css}}" id="main_{{index}}">
<div class="caption">
<h2>{{h2}}</h2>
<h3>{{h3}}</h3>
</div>
<img src="img/{{index}}.jpg" class="picture">
</div>
</div>
<div class="ctrl" id="template_ctrl">
<a href="javascript:switchSlider({{index}});" class="ctrl-i" id="ctrl_{{index}}">
<img src="img/{{index}}.jpg">
</a>
</div>
</div>
<script type="text/javascript">
//1.数据定义（实际生产环境中，应由后台给出）
var data = [
{img:1,h2:'Creative',h3:'DUET'},
{img:2,h2:'Friendly',h3:'DEVIL'},
{img:3,h2:'Tranquilent',h3:'COMPATRIOT'},
{img:4,h2:'Insecure',h3:'HUSSLER'},
{img:5,h2:'loving',h3:'REBEL'},
{img:6,h2:'Passionate',h3:'SEEKER'},
{img:7,h2:'Crazy',h3:'PRIEND'}
];
//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.添加幻灯片的操作，（所有幻灯片&对应的按钮）
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 = [];
var out_ctrl = [];
//3.3 遍历所有数据，构建最终输出的HTML
for(var i =0;i<data.length;i++){
var _html_main = tpl_main
.replace(/{{index}}/g,data[i].img )
.replace(/{{h2}}/g,data[i].h2)
.replace(/{{h3}}/g,data[i].h3 )
.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把html回写到对应的Dom里
g('template_main').innerHTML = out_main.join('');
g('template_ctrl').innerHTML = out_ctrl.join('');
//7.增加#main_background
g('template_main').innerHTML +=tpl_main
.replace(/{{index}}/g,'{{index}}' )
.replace(/{{h2}}/g,'')
.replace(/{{h3}}/g,' ' );;
g('main_{{index}}').id = 'main_background';
}
//5.幻灯片切换
function switchSlider (n) {
//5.1获得要展现的幻灯片&控制按钮 DOM
var main = g('main_'+n);
var ctrl = g('ctrl_'+n);
//5.2获得所有的幻灯片以及控制按钮
var clear_main = g('.main-i');
var clear_ctrl = g('.ctrl-i');
//5.3清除他们的样式
for(var 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', '');
}
//5.4为当前按钮和幻灯片附加样式
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(var 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(1);
setTimeout(function(){
movePictures();
},100);
}
</script>
</body>
</html>
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