js轮播

<body onload="banner()">
    <div id="kunag">
        <img src="0.png" class="tu">
        <ul>
            <li>1</li>
            <li>2</li>
            <li>3</li>
            <li>4</li>
        </ul>
        <div id="Left"><</div>
        <div id="Right">></div>
    </div>
</body>

做一个我们想要实现的样式!效果图如下

	<style>
		#kunag{ 800px;height: 350px;margin: 80px auto;position: relative;}
		.tu{ 800px;height: 350px;background-size: 100% 100%;position: absolute;}
		ul{list-style: none;float: left;position: absolute;text-align: center;bottom:0;left: 50%;transform:translate(-50%,0);}
		ul li{float: left;border-radius: 50%;margin-right:10px;  30px;height: 30px;border-radius: 50%;text-align: center;line-height: 30px;background: red;}
		#Right,#Left{position: absolute; 0px;height: 100%;background: yellow;top: 0;text-align: center;line-height: 400px;font-size: 80px;font-weight: bold;color: green;overflow: hidden;transition: .8s;}
		#Left{left: 0;}
		#Right{right: 0;}
	</style>

  给他样式

    <script>
        var imgs=document.getElementsByTagName('img')[0];
        var inde = -1;
        var odiv=$("kunag")
        var lis=document.getElementsByTagName('li');
        var triem = setInterval("banner()",1000);
        var Left = $("Left");            
        var Right = $("Right");
        function banner(){
            inde++
            if(inde==4){                         
                inde=0;
            }
            imgs.src=inde+".png"                 //创建图片
            quDiaColor()                         //原来的颜色
            lis[inde].style.background="yellow"; //更改每次图片下面小圆圈的颜色
        }
        for (var i=0;i<lis.length;i++) {
            lis[i].onclick = function(){
                triem = setInterval("banner()",1000);
                clearInterval(triem);
                inde = this.innerHTML-1;
                imgs.src=inde+".png"
                quDiaColor();
                lis[inde].style.background = "yellow";                
            }
        }
        function quDiaColor(){                    
            for(i=0;i<lis.length;i++){
                lis[i].style.background="red";
                }
            }
        odiv.onmouseover=function(){             //鼠标放上去 
            clearInterval(triem)
            Left.style.width = Right.style.width = "100px";
            odiv.onmouseout=function(){          //鼠标离开
                triem=setInterval(banner,1000)
                Left.style.width = Right.style.width = "0px";
            }
        }
        Left.onclick = function(){
                inde--;        
                if (inde == -1) {
                    inde = 3
                }
                imgs.src=inde+".png"
                quDiaColor();
                lis[inde].style.background = "yellow";
            }
        Right.onclick = function(){
                banner()
            }
    </script>
原文地址:https://www.cnblogs.com/zhaoxialong/p/8352873.html