轮播图效果实现-优快云博客

本文链接：https://blog.youkuaiyun.com/myLoverIsYou_web/article/details/80372271
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style>
			*{margin: 0;padding: 0;}
			div.mask{width:508px ;height:206px ;margin:100px auto;position: relative;overflow: hidden;}
			ul{list-style: none;}
			ul.img{width: 700%;height: 206px;position: absolute;left: 0;top: 0;}
			ul.img li{float: left;}
			ul.img li img{width: 508px;height: 206px;}
			ul.arrow{position:absolute;left:0;top:50%;transform:translateY(-50%);width: 100%;font-size: 30px;text-align: center;color: white;}
			ul.arrow li{float: left;width: 50px;line-height: 50px;cursor: pointer;background-color:rgba(0,0,0,.8)}
			ul.arrow li:nth-child(1){float: right;}
			ul.point{width: 100px; height: 5px;position: absolute;bottom: 10px;left: 50%;transform: translateX(-50%);}
			ul.point li{width:10px;height: 5px;border-radius: 10px;margin-left: 10px;float: left;background-color:rgba(255,0,0,.5) ;cursor: pointer;}
			ul.point li:nth-child(1){margin-left: 0;}
			ul.point li.active{transition:all 2s infinite;width: 20px;}
		</style>
	</head>
	<body>
		<div class="mask">
			<ul class="img">
				<li>
					<img src="../img/5b56fefbe2cd3901156b0e70979730da.png" alt="" />
				</li>
				<li><img src="../img/c22ff27949d96c8592b8c91514703ecd.jpg" alt="" /></li>
				<li><img src="../img/9fb97f15c5a219d7ffdd9ee8f26aa9cc.jpg" alt="" /></li>
				<li><img src="../img/136e244dcf4130d87633e3f6af7df94d.png" alt="" /></li>
				<li><img src="../img/1cea15a7acb21dd44df8a6ee3dd7ea45.jpg" alt="" /></li>
			</ul>
			<ul class="point">
				<li class="active"></li>
				<li></li>
				<li></li>
				<li></li>
				<li></li>
			</ul>
			<ul class="arrow aww">
				<li>></li>
				<li><</li>
			</ul>
		</div>
		
	</body>
	<script type="text/javascript" src="../js/move.js" ></script>
	<script>
		window.οnlοad=function(){
			/*封装的getbyclassname开始*/
			function getByclassName(classname){
				var arr=[];
				var doM=document.getElementsByTagName('*');
				for(var i=0;i<doM.length;i++){
					var index=doM[i];
					if(index.className.indexOf(classname)==0){
						arr.push(index);
					}
				}
				return arr;
			}
			/*封装的getbyclassname结束*/
			var oArrow=getByclassName("arrow")[0];//自己封装的getclassname;
			var oPoint=getByclassName('point')[0];
			var oIMG=getByclassName('img')[0];
			var oMask=getByclassName('mask')[0];
			oIMG.now=0;
			/*克隆图片开始*/
			/*var liFirst=oIMG.children[0].cloneNode(true);
			var liLast=oIMG.children[4].cloneNode(true);
			oIMG.appendChild(liFirst);
			oIMG.insertBefore(liLast,oIMG.children[0]);*/
			//console.log(liFirst,liLast);
//			oIMG.style.left=-oMask.offsetWidth+'px';
			/*克隆图片结束*/
			/*单击切换实现转换开始*/
			var len=oIMG.children.length;
			oArrow.children[0].οnclick=function(){
				if(oIMG.now==len-1){
					oIMG.now=0;
					startMove(oIMG,{left:0});
					updatePoint(oIMG.now);
				}else{
					oIMG.now++;
					var current=oIMG.offsetLeft;
					var target=oIMG.now*oMask.offsetWidth;
					var dis=Math.abs(target)-Math.abs(current);
					startMove(oIMG,{left:-dis+current});
					console.log(dis,oIMG.now,len)
					updatePoint(oIMG.now);
				}
				
			}
			
			oArrow.children[1].οnclick=function(){
				if(oIMG.now==0){
					oIMG.now=len-1;
					startMove(oIMG,{left:-oIMG.now*oMask.offsetWidth});
					updatePoint(oIMG.now);
				}else{
					oIMG.now--;
					var current=oIMG.offsetLeft;
					var target=oIMG.now*oMask.offsetWidth;
					var dis=Math.abs(target)-Math.abs(current);
					startMove(oIMG,{left:-dis+current});
					updatePoint(oIMG.now);
				}
				
				console.log(oIMG.now)
			}
			/*单击实现转换结束*/
			/*单击小圆点的转换开始*/
			function updatePoint(index){
				for(var i=0;i<oIMG.children.length;i++){
					oPoint.children[i].className='';
				}
				oPoint.children[index].className='active';
			}
			/*单击开始*/
			for(var i=0;i<oIMG.children.length;i++){
				oPoint.children[i].index=i;
				console.log(oPoint.children[i])
				oPoint.children[i].οnclick=function(){
					updatePoint(this.index);
					startMove(oIMG,{left:-this.index*oMask.offsetWidth});
					oIMG.now=this.index;
				}
			}
			/*单击结束*/
			
			/*单击小圆点的转换结束*/
			/*自动播放开始*/
			function autoPlay(){
				clearInterval(oIMG.time);
				oIMG.time=setInterval(function(){
					oArrow.children[0].click();
				},3000)
			}
			autoPlay();
			/*自动播放结束*/
			/*鼠标移动在Omask上面时停止播放开始*/
			oMask.οnmοuseenter=function(){
				clearInterval(oIMG.time);
				console.log(11)
			}
			oMask.οnmοuseleave=function(){
				autoPlay();
				console.log(22)
			}
			/*鼠标移动在Omask上面时停止播放结束*/
		}
	</script>
</html>