js分页（把公司同事的贴过来了，嘿嘿）

//使用说明：需要在页面中做如下配置
//1. 为结果表的<tr>标签增加class：'row'
//2. 配置空的<span id="xxx"></span>标签，id分别为currentPage和pageCount来展示当前页数和总页数
//3. 全局变量pageSize控制每页容量，该变量发生变化后调用refreshPageSplit()可实现刷新

//使用时在页面加载完毕后为pageSize赋值，然后调用一次initPageSplit()
//之后可通过firstPage(), lastPage(), previousPage(), nextPage()实现翻页

var rowCount = null; //总条目数
var pageCount = null; //总页数
var currentPage = null; //当前页
var pageSize = null; //每页容量

function initPageSplit(){
if (pageSize==null) pageSize = 5;
rowCount = $(".row").length;
pageCount = Math.ceil(rowCount/pageSize);
currentPage = 1;
refreshPageSplit();
}

function refreshPageSplit() {
if (pageSize==null) pageSize = 5;
pageCount = Math.ceil(rowCount/pageSize);
if (currentPage > pageCount) currentPage = pageCount;
$("#currentPage").html(currentPage);
$("#pageCount").html(pageCount);
$.grep($(".row"), function (ele, index){
if (index>=(currentPage-1)*pageSize && index<currentPage*pageSize)
$(ele).show();
else
$(ele).hide();
});
}

function firstPage(){
currentPage = 1;
refreshPageSplit();
}

function lastPage(){
currentPage = pageCount;
refreshPageSplit();
}

function previousPage(){
if (currentPage>1){
currentPage--;
refreshPageSplit();
}
}

function nextPage(){
if (currentPage<pageCount){
currentPage++;
refreshPageSplit();
}
}