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原声js实现放大镜效果

小云云原创: 2018-03-29 17:42:351162浏览
本文主要和大家分享原声js实现放大镜效果，主要以代码的方式和大家分享，希望能帮助到大家。
<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script src="js/tools.js" type="text/javascript" charset="utf-8"></script>
		<script src="js/animate.js" type="text/javascript" charset="utf-8"></script>
		<style>
			*{margin: 0;padding:0}
			.mg{
				height:577px;
				width:352px;
				
				margin-left: 100px;
				margin-top:100px;
			}
			ul{
				height:68px;
				width:348px;
				display: flex;
				justify-content: space-between;
				position: absolute;
				left:0;
				top:0;
			}
			li{
				list-style: none;
				float:left;
				border:2px solid white;
			}
			li img{
				height:64px;
				width:50px;
			}
			li:hover{
				border: 2px solid red;
			}
			.mg-1{
				height:450px;
				width: 350px;
				margin-bottom: 10px;
				position:relative;
			}
			.mg-1>img{
				height:450px;
				width:350px;
			}
			.ri{
				height:540px;
				width:540px;
				position: absolute;
				left:372px;
				top:0;
				display: none;
				overflow: hidden;
			}
			.ri>img{
				position: absolute;
				left:0;
				right:0;
			}
			.mask{
				height:200px;
				width:200px;
				background: #FEDE4F;
				opacity:0.5;
				position: absolute;
				left:0;
				top:0;
				display: none;
			}
			.mg-1>p{
				height:30px;
				width: 30px;
				position: absolute;
				bottom:0;
				right:0;
			}
			.mg-2{
				height:68px;
				width:350px;
				margin-bottom:10px;
				position: relative;
			}
			i{
				display: block;
				height:32px;
				width:22px;
				overflow: hidden;
				
			}
			.pre{
				background: url(img/disabled-prev.png) no-repeat;
				position: absolute;
				left:0;
				top:50%;
				margin-top:-16px;
				cursor: pointer;	
			}
			.next{
				background: url(img/disabled-next.png) no-repeat;
				position: absolute;
				right:0;
				top:50%;
				margin-top:-16px;
				cursor: pointer;	
			}
			.mid{
				height:68px;
				width:290px;
				margin:0 auto;
				overflow: hidden;
				position: relative;
			}
		</style>
	</head>
	<body>
		<p class=&#39;mg&#39;>
			<p class=&#39;mg-1&#39;>
				<img class=&#39;imgx&#39; src="img/1a.jpg" alt="" />
				<p class=&#39;mask&#39;></p>
				<p class="ri"><img class=&#39;imgd&#39; src="img/5a601932N76367e55.jpg!cc_800x1026.jpg" alt="" /></p>
				<p><img src="img/sprite-magnify.png" alt="" /></p>
			</p>
			<p class="mg-2">
				<i class=&#39;pre&#39;></i>
				<p class=&#39;mid&#39;>
					<ul class="list">
					   <li><a href="#"> <img src="img/5a601932N76367e55.jpg!cc_50x64.jpg"/></a></li>
					   <li><a href="#"> <img src="img/5a601932N76367e55.jpg!cc_50x64.jpg"/></a></li>
					   <li><a href="#"> <img src="img/5a601934N2b80ec89.jpg!cc_50x64.jpg"/></a></li>
					   <li><a href="#"> <img src="img/5a601934N2b80ec89.jpg!cc_50x64.jpg"/></a></li>
					   <li><a href="#"> <img src="img/59c35a89N2e519554.jpg!cc_50x64.jpg"/></a></li>
					   <li><a href="#"> <img src="img/5a5f011fN971a30f5.jpg!cc_50x64.jpg"/></a></li>
					   
					</ul>
				</p>
				<i class=&#39;next&#39;></i>
			</p>
		</p>
		<script type="text/javascript">
		window.onload=function(){
				var  imgdWidth=350/200*540;
			var imgdHeight=450/200*540;
			var imgx=document.getElementsByClassName(&#39;imgx&#39;)[0];
			var imgd=document.getElementsByClassName(&#39;imgd&#39;)[0];
			imgd.style.width=imgdWidth+&#39;px&#39;;
			imgd.style.height=imgdHeight+&#39;px&#39;;
			var mark=document.getElementsByClassName(&#39;mask&#39;)[0];
			var mg1=document.getElementsByClassName(&#39;mg-1&#39;)[0];
			var mg=document.getElementsByClassName(&#39;mg&#39;)[0];
			var ri=document.getElementsByClassName(&#39;ri&#39;)[0];
			mg1.onmouseenter=function(){
				mark.style.display=&#39;block&#39;;
				ri.style.display=&#39;block&#39;;
				mg1.onmousemove=function(event){
					var event=event||window.event;
					mark.style.left=event.pageX-100-mg.offsetLeft+&#39;px&#39;;
					mark.style.top=event.pageY-100-mg.offsetTop+&#39;px&#39;;
					if((event.pageX-100-mg.offsetLeft)<=0){
						mark.style.left=0;
					}else if((event.pageX-100-mg.offsetLeft)>=150){
						mark.style.left=150+&#39;px&#39;;
					}
					
					if((event.pageY-100-mg.offsetTop<=0)){
						mark.style.top=0;
					}else if((event.pageY-100-mg.offsetTop>=250)){
						mark.style.top=250+&#39;px&#39;;
					}
					imgd.style.left=-parseInt(mark.style.left)*540/200+&#39;px&#39;;
					imgd.style.top=-parseInt(mark.style.top)*540/200+&#39;px&#39;;
					
					
				}
				
			}
			mg1.onmouseleave=function(){
				mark.style.display=&#39;none&#39;;
				ri.style.display=&#39;none&#39;;
			}
			var list=document.getElementsByClassName(&#39;list&#39;)[0];
			var imgs=list.getElementsByTagName(&#39;img&#39;);
			for(let i=0;i<imgs.length;i++){
				imgs[i].onmouseover=function(){
					
					imgx.src=&#39;img/&#39;+(i+1)+&#39;a.jpg&#39;;
				}
			}
			var pre=document.getElementsByClassName(&#39;pre&#39;)[0];
			var next=document.getElementsByClassName(&#39;next&#39;)[0];
			var left=getStyle(list,&#39;left&#39;);
			
		
				pre.onclick=function(){
					animate(list,{left:-60});
				}
			
				
				next.onclick=function(){
					animate(list,{left:0});
	
				}
		}
			
		</script>
	</body>
</html>
原声js实现放大镜效果

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