CSS+JS实现banner图滚动和点击切换
HTML 部分代码：
<body> <div id="banner">
<div id="inside"><img src="img/banner1.png" id="img1" /><img src="img/banner2.png" id="img2" /><img src="img/banner3.png" id="img3" /><img src="img/banner4.png" id="img4" /><img src="img/banner1.png" id="img5" />
</div> <ul id="bannerNum">
<li onclick="changeBanner(1)">1</li>
<li onclick="changeBanner(2)">2</li>
<li onclick="changeBanner(3)">3</li>
<li onclick="changeBanner(4)">4</li>
</ul>
</div> </body>
CSS代码：
<style type="text/css">
*{
padding: 0px;
margin: 0px;
} #banner{
width: 100%;
overflow: hidden;
white-space: nowrap;
position: relative;
} #banner #inside{
width: 9600px;
position: relative;
left: 50%;
margin-left: -960px;
transition: all 1s ease;
} #banner img{
width: 1920px;
} #bannerNum{
padding: 0px;
list-style: none;
overflow: hidden;
width: 160px;
position: absolute;
bottom: 30px;
right: 50px;
} #bannerNum li{
width: 30px;
height: 30px;
background-color: white;
text-align: center;
line-height: 30px;
margin: 0px 5px;
float: left;
cursor: pointer;
} </style>
JS 部分代码：
<script>
var num = 1;
var inside;
window.onload = function(){ inside = document.getElementById("inside"); var interval = setInterval(function(){
inside.style.transition = "all 1s ease";
num++;
switch (num){
case 1:
inside.style.transition = "none";
inside.style.marginLeft = (-960)+"px";
break;
case 2:
inside.style.marginLeft = (-960-1920)+"px";
break;
case 3:
inside.style.marginLeft = (-960-1920*2)+"px";
break;
case 4:
inside.style.marginLeft = (-960-1920*3)+"px";
break;
case 5:
inside.style.marginLeft = (-960-1920*4)+"px";
num = 0;
break;
default:
break;
}
},2000);
} function changeBanner(num1){
inside.style.transition = "none";
switch (num1){
case 1:
inside.style.marginLeft = (-960)+"px";
break;
case 2:
inside.style.marginLeft = (-960-1920)+"px";
break;
case 3:
inside.style.marginLeft = (-960-1920*2)+"px";
break;
case 4:
inside.style.marginLeft = (-960-1920*3)+"px";
break;
default:
break;
} num = num1-1; }
</script>