新手学js的效果图1---（ 淘宝等商城货物查看特效）

本人结合之前所学一起写了，多个特效，只是新手自己瞎鼓捣的，思路清晰，具体实现的货物放大镜等，替换当中的img地址就可以查看特效

　　

 <!DOCTYPE html>
 <html lang="en">
 <head>
     <meta charset="UTF-8">
     <title>卖娃娃</title>
     <style>
         #big{width:420px;height:300px;border: 1px solid #999;}
         #fdj{width:100px;height: 100px;border:1px solid red;position: absolute;background:blue;opacity:0.2;display: none;}
         #big img{display:none;}
         #small{width:420px;height:40px;}
         .bt{float:left;width:80px;height:40px;border:1px solid red;margin-left:2px;text-align:center;line-height:40px;font-size: 20px;}
         #bbig{width:400px;height:400px;position:absolute;top:8px;left:440px;overflow: hidden;display: none;}
         #bbig img{display:none;}
     </style>
 </head>
 <body>
     <div id="big">
         <div id="fdj"></div>
         <img src="./img/1.jpg" width='420px' height="300px" style="display:block;">
         <img src="./img/2.jpg" width='420px' height="300px">
         <img src="./img/3.jpg" width='420px' height="300px">
         <img src="./img/4.jpg" width='420px' height="300px">
         <img src="./img/5.jpg" width='420px' height="300px">
     </div>
     <div id="small">
         <div class="bt" style="background:lightgreen;">性感</div>
         <div class="bt" >诱惑</div>
         <div class="bt" >纯洁</div>
         <div class="bt" >妖艳</div>
         <div class="bt" >可爱</div>
     </div>
     <div id="bbig">
         <img src="./img/1.jpg" style="display:block;" width="1260" height="900">
         <img src="./img/2.jpg" width="1220" height="900">
         <img src="./img/3.jpg" width="1220" height="900">
         <img src="./img/4.jpg" width="1220" height="900">
         <img src="./img/5.jpg" width="1220" height="900">
     </div>
 </body>
 <script>
     //获取图片
     var imgs = document.getElementById('big').getElementsByTagName('img');
     //获取图片下的div
     var divs = document.getElementById('small').getElementsByTagName('div');
     //获取放大的图片
     var bimgs = document.getElementById('bbig').getElementsByTagName('img');
     //获取放大镜的图片
     var bbig = document.getElementById('bbig');
     //定义初始值
     var m = 1;
     //鼠标放进下面的标题停止，离开开始
     for(var i=0;i<divs.length;i++){
         (function(i){
             divs[i].onmouseover=function(){
                 cImg(i);
                 cDiv(i);
                 cBbig(i);
                 clearInterval(timer);
                 m=i+1;
             }
             divs[i].onmouseout=function(){
             timer = setInterval(run,2000);
             }
         })(i);
     }
     //定时播放
     var timer = setInterval(run,2000);
     //定义播放的函数
     function run(){
         if(m>4){
             m = 0;
         }
         cImg(m);
         cDiv(m);
         cBbig(m);
         m++;
     }
     //图片轮放
     function cImg(n){
         for(var i=0;i<imgs.length;i++){
             imgs[i].style.display = "none";
         }
         imgs[n].style.display = "block";
     }
     //标题轮放
     function cDiv(n){
         for(var i=0;i<divs.length;i++){
             divs[i].style.background = "none";
         }
         divs[n].style.background = "lightgreen";
     }
     //放大的图轮放
     function cBbig(n){
         for(var i=0;i<bimgs.length;i++){
             bimgs[i].style.display = "none";
         }
         bimgs[n].style.display = "block";
     }
     //鼠标移进去停止,出来继续轮放
     big.onmouseover = function(){
         fdj.style.display = "block";
         bbig.style.display = "block";
         clearInterval(timer);
     }
     big.onmouseout = function(){
         fdj.style.display = "none";
         bbig.style.display = "none";
         timer = setInterval(run,2000);
     }
     /*         放大镜      */
     big.onmousemove=function(e){
         var e = e || window.event;
         this.style.cursor="move";
         var fx = e.clientX - big.offsetLeft;
         var fy = e.clientY - big.offsetTop;

         document.title = fx+":"+fy;

         fdj.style.left = (fx-42)+"px";
         fdj.style.top = (fy-42)+"px";
         //判断光标位置决定放大镜的位置,不出边框
         if(fx<50){
             fdj.style.left = 8+"px";
         }
         if(fx>370){
             fdj.style.left = 328+"px";
         }
         if(fy<50){
             fdj.style.top = 8+"px";
         }
         if(fy>250){
             fdj.style.top = 208+"px";
         }
         var bigfx = parseInt(fdj.style.left);
         var bigfy = parseInt(fdj.style.top);
         console.log(bigfy);
         console.log(bigfx);
         //放大镜里显示的东西按倍数
         bbig.scrollTop = (bigfy-8)*3;
         bbig.scrollLeft = (bigfx-8)*3;
         // bbig.style.display = 'block';
         console.log('--------');
         console.log(bbig.scrollTop);
         console.log(bbig.scrollLeft);
         // console.log(fdj.style.top);
     }

 </script>
 </html>