JS原生带小白点轮播图实例讲解
咱们刚刚说了js原生轮播图，现在给他加上可以随着一起走动的小圆点吧！
css代码：
*{
margin:0px;
padding:0px;
}
ul{
width:2500px;
height:300px;
position:absolute;
}
li{
float:left;
list-style:none;
}
img{
width:500px;
height:300px;
}
div{
width:500px;
height:300px;
margin:50pxauto;
position:relative;
overflow:hidden;
}
/*小白点的ul*/
#round_ul{
width:300px;
height:30px;
/*background:yellow;*/
position:relative;
margin:250pxauto;
}
#round_ulli{
width:20px;
height:20px;
border-radius:50%;
background:#2196f3;
margin-left:50px;
cursor:pointer;
}