<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>JS分页</title>
<style type="text/css">
body{font-size:12px;}
#pager{ height:20px; float:left;}
#pager a{height:18px; line-height:18px; border:1px solid #ccc; padding-left:0.4em; padding-right:0.4em; text-decoration:none; display:block; float:left; margin:0px 3px;}
#pager a:hover{background-color:#1f3a87; color:#fff; text-decoration:none;}
.not-current{background-color:#fff; color:#1f3a87;}
.current{background-color:#1f3a87; color:#fff; text-decoration:none;}
</style>
</head>
<body onload="CreatePager(10,10,2043,'?page=14',10)">
<script type="text/javascript">
//pageSize,每页显示多少条记录,currentPage当前页,recordCount共有多少条记录,url页面路径，必须带有page参数,numCount，每页显示多少个分页数字
var CreatePager=function(pageSize,currentPage,recordCount,url,numCount){
//创建一个链接
var CreateHref=function(url,page,p_ele,t,currentPage){
var a=document.createElement('a');
var reg=new RegExp("page=\\d+");
url=url.replace(reg.exec(url),'page='+page)
a.setAttribute('href',url);
a.setAttribute('class',currentPage==page?'current':'not-current');
var t=document.createTextNode(t);
a.appendChild(t);
document.getElementById(p_ele).appendChild(a);
}
//计算属于哪个区间
var GetNumArea=function(num,numCount,pageCount){
var currentArea=parseInt((num-1)/numCount)+1;
var lastArea=parseInt((pageCount-1)/numCount)+1;
this.minNum=(currentArea-1)*numCount+1;
var tempTaxNumber=currentArea*numCount+1;
this.maxNum=tempTaxNumber>pageCount?pageCount:tempTaxNumber;
this.preAreaNum=currentArea<=1?1:this.minNum-1;
this.afterAreaNum=currentArea>=lastArea?pageCount:this.maxNum+1;
}
var pageCount=0;//总页数
pageCount=recordCount%pageSize===0?recordCount/pageSize:parseInt(recordCount/pageSize)+1;//总页数
// var pager=document.getElementById('pager');//获取分页的元素
// var pageSummary=document.createElement('span');//创建一个DIV，在里面显示第几页共几页
// var summaryContent=document.createTextNode('第'+currentPage+'页共'+pageCount+'页');
// pageSummary.appendChild(summaryContent);
// pager.appendChild(pageSummary);
CreateHref(url,1,'pager','首页',currentPage);//添加首页链接
CreateHref(url,new GetNumArea(currentPage,numCount,pageCount).preAreaNum,'pager','<<',currentPage);//添加前面的省略号
//显示分页数字 开始
var pageArea = pageCount / numCount;// 页码区间
if(pageCount<numCount){
for(i=1;i<=pageCount;i++){
CreateHref(url,i,'pager',i,currentPage);
}
}else{
currentPage=currentPage>=pageCount?pageCount:currentPage;
var minNum=new GetNumArea(currentPage,numCount,pageCount).minNum;
var maxNum=new GetNumArea(currentPage,numCount,pageCount).maxNum;
for(i=minNum;i<maxNum;i++){
CreateHref(url,i,'pager',i,currentPage);
}
}
//显示分页数字 结束
CreateHref(url,new GetNumArea(currentPage,numCount,pageCount).afterAreaNum,'pager','>>',currentPage);//显示分页后面的省略号
CreateHref(url,pageCount,'pager','末页',currentPage);//添加末页链
}
</script>
<div id='pager'></div>
</body>
</html>
