
首先,我们来看一下效果图:

效果图是这样的,我们需要定义一个div,并放入三张图片,还需要左右两个按钮,以及底下三个按钮三个div。
HTML代码:
推荐教程:javascript教程
css代码:
.clear:after{
display:block;
content:"";
clear:both;
}
.banner{
width: 100%;
position:relative;
height: 390px;
}
.banner ul{
width: 100%;
height: 390px;
list-style-type:none;
overflow: hidden;
}
.banner ul li{
width: 100%;
position: absolute;
}
.pageNav{
position: absolute;
left:50%;
bottom:20px;
transform: translateX(-50%);
}
.pageNav a{
display:inline-block;
margin:0 5px;
width: 20px;
height: 20px;
background-color:#fff;
border-radius:50%;
border:2px solid #000;
cursor:pointer;
}
.pageNav a.cur{
background-color:red;
}
.leftBtn, .rightBtn{
position:absolute;
top: 50%;
transform:translateY(-50%);
width: 40px;
height: 50px;
background-color:rgba(0, 0, 0, 0.5);
cursor:pointer;
}
.leftBtn{
left:0;
}
.rightBtn{
right:0;
}
.leftBtn:hover,.rightBtn:hover{
background-color:rgba(0, 0, 0, 0.8);
}js代码:
var banner=document.getElementById("banner");
var ul=banner.getElementsByTagName("ul")[0];
var li=ul.getElementsByTagName("li");
var pageNav=banner.getElementsByClassName("pageNav")[0],leftBtn=document.getElementsByClassName("leftBtn")[0],rightBtn=document.getElementsByClassName("rightBtn")[0],n=0,index=0,timerElem=null,state=false;
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