JS轮播图用tween.js动画库完成,并且有切换功能

ゞ浴缸里的玫瑰 2021-09-15 18:04 275阅读 0赞

![70][]

<!DOCTYPE html>
    <html lang="zh-CN">
    <head>
    	<meta charset="UTF-8">
    	<title>Document</title>
    	<style>
    		.wrap{
    			width: 500px;
    			height: 300px;
    			position: relative;
    			overflow: hidden;
    		}
    		.box{
    			width: 500%;
    			height: 100%;
    			position: absolute;
    			left: 0;
    		}
    		.box>div{
    			width: 500px;
    			height: 300px;
    			float: left;
    			font-size: 100px;
    			text-align: center;
    			line-height: 300px;
    
    		}
    		div:nth-child(1){
    			background-color: red;
    		}
    		div:nth-child(2){
    			background-color: green;
    		}
    		div:nth-child(3){
    			background-color: pink;
    		}
    		div:nth-child(4){
    			background-color: blue;
    		}
    	</style>
    </head>
    <body>
    	<input type="button" value="last">
    	<input type="button" value="next">
    	<input type="button" value="按钮1" class="ha">
    	<input type="button" value="按钮2" class="ha">
    	<input type="button" value="按钮3" class="ha">
    	<input type="button" value="按钮4" class="ha">
    	<div class="wrap">
    		<div class="box">
    			<div id="one">div1</div>
    			<div>div2</div>
    			<div>div3</div>
    			<div>div4</div>
    			<div id="one">div1</div>
    		</div>
    	</div>
    </body>
    <script src="./tween.js"></script>
    <script>
    	//获取元素
    	var inps = document.querySelectorAll("input");
    	var box = document.querySelector(".box");
    	var ha = document.querySelectorAll(".ha");
    	//记录图片下标
    	var index = 0;
    	var w = -500;
    	var timer = null;
    	//自动播放
    	//放在计时器就是自动播放,骑士就是下一张的操作
    	function autoImg(){
    		index++;
    		if(index>3){
    			// console.log(index);
    			index=0;
    			// console.log(index);
    		}
    		//动画开始时间
    		var t = 0;
    		//动画结束时间
    		var d = 30;
    		//动画的起始位置
    		var b = box.offsetLeft;
    		//动画的终止位置减去动画的起始位置,该变量为-500
    		// var c =index*w-b;
    		console.log(c);
    		var c = -500;
    		if(b<=-1500){
    			b=0;
    		}
    		clearInterval(timer);
    		timer = setInterval(function(){
    			t++;
    			box.style.left=Tween.Linear(t,b,c,d)+"px";
    			if(t>=d){
    				clearInterval(timer);
    			}
    		},30);
    	}
    //关闭轮播
    	function clearAuto(){
    		clearInterval(autotimer);
    		 autotimer = setInterval(autoImg,3000);
    	}
    	var autotimer = setInterval(autoImg,3000);
    
      //下一张
      inps[1].onclick = function(){
      	clearAuto();
      	autoImg();
      }
      //上一张
      function prevImg(){
    		index--;
    		if(index<0){
    			index=3;
    		}
    		//动画开始时间
    		var t = 0;
    		//动画结束时间
    		var d = 30;
    		//动画的起始位置
    		var b = box.offsetLeft;
    		//动画的终止位置减去动画的起始位置
    		var c =index*w-b;
    		clearInterval(timer);
    		timer = setInterval(function(){
    			t++;
    			box.style.left=Tween.Linear(t,b,c,d)+"px";
    			if(t>=d){
    				clearInterval(timer);
    			}
    		},30);
    	}
     inps[0].onclick = function(){
     	clearAuto();
     	prevImg();
     }
    function indexImg(n){
    	  index = n;
    		var t = 0;
    		//动画结束时间
    		var d = 30;
    		//动画的起始位置
    		var b = box.offsetLeft;
    		//动画的终止位置减去动画的起始位置
    		var c =index*w-b;
    		clearInterval(timer);
    		timer = setInterval(function(){
    			t++;
    			box.style.left=Tween.Linear(t,b,c,d)+"px";
    			if(t>=d){
    				clearInterval(timer);
    			}
    		},30);
    	}
    	
      for(var i=0;i<ha.length;i++){
      	(function(i){
      		ha[i].onclick = function(){
      			// box.style.left = (-500*(i-2))+"px";
      			clearAuto();
      			indexImg(i);
      			console.log(i);
      		}
      	})(i);
      
    
      }
    
    </script>
    </html>

[70]: /images/20210813/5df1bc28ccb44e7a9954e9ffe752cb44.png