jQuery客户端分页实例代码_jquery

<script src="/js/jquery-1.4.1.js" type="text/javascript"></script> 
   <script type="text/javascript"> 
       var pageindex = 1; 
       var pagesize = 2; 
       $(function () { 
           previous(); 
       }) 
       function previous() { 
           if (pageindex < 1 || pageindex == 1) { 
               pageindex = 1; 
               $("#imgdiv img:lt(" + pagesize + ")").show(); 
               $("#imgdiv img").not($("#imgdiv img:lt(" + pagesize + ")")).hide(); 
           } 
           else { 
               pageindex--; 
               if (pageindex != 1) { 
                   $("#imgdiv img:gt(" + ((pageindex - 1) * pagesize - 1) + "):lt(" + pagesize + ")").show(); 
                   $("#imgdiv img").not($("#imgdiv img:gt(" + ((pageindex - 1) * pagesize - 1) + "):
                   lt(" + pagesize + ")")).hide(); 
               } 
               if (pageindex == 1) { 
                   $("#imgdiv img:lt(" + pagesize + ")").show(); 
                   $("#imgdiv img").not($("#imgdiv img:lt(" + pagesize + ")")).hide(); 
               } 
           } 
       } 
       function next() { 
           var p = $("#imgdiv img").length / pagesize; 

           var pagecount = parseInt(Math.ceil(p)); 

           if (pageindex + 1 > pagecount) { 
               pageindex = pagecount; 
           } else { 
               pageindex++; 
           } 
           $("#imgdiv img:gt(" + ((pageindex - 1) * pagesize - 1) + "):lt(" + pagesize + ")").show(); 
           $("#imgdiv img").not($("
           #imgdiv img:gt(" + ((pageindex - 1) * pagesize - 1) + "):lt(" + pagesize + ")")).hide(); 
       } 
   </script> 
<div> 
       <a href="javascript:previous()">上一页</a> 
       <div id="imgdiv"> 
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       </div> 
       <a href="javascript:next()">下一页</a> 
   </div>