js简单图片切换

 <!DOCTYPE html>

 <html>

     <head>

         <meta charset="utf-8"/>

         <title>

         </title>

     </head>

         <style>

             #zp img{

                 margin:0 auto;

             }

         </style>

     <body>

         <div id="zp">

         <img src="iamges/46.png" width="300" height="200" id="img1"/>

         </div>

         <input type="button" value="上一张" onclick="sz()"/>

         <input type="button" value="下一张" onclick="xz()"/>

     </body>

     <script type="text/javascript">

             var picArr=new Array("iamges/46.png","iamges/47.png","iamges/48.png","iamges/49.png","iamges/50.png");

             var xp=0;

             function sz(){

                 xp++;

                 if(xp==picArr.length){

                     xp=0;

                 }

                 document.getElementById("img1").src=picArr[xp];

             }

             function xz(){

                     xp--;

                     if(xp<0){

                         xp=picArr.length-1;

                     }

                     document.getElementById("img1").src=picArr[xp];

             }

         </script>

 </html>
效果图
巴特西

js简单图片切换

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