json一次取所有数据，然后在前后进行分页显示

var mJson = null;
var pageIndex = 1;//当前页号
var pageCount = 0;//总页号
var pageSize = 20;//每页显示数

//查询后返回值处理
function update_page(result) {
mJson = result;
var mSumRec = mJson.length;
pageIndex = 1;
pageCount = Math.floor((mSumRec -1)/pageSize) + 1;
setPageNo();
dealPage();
}
//每次操作时设置显示总页数与当前页数
function setPageNo(){
if (pageCount == 0){
$("#mSum").html("0");
}else{
$("#mSum").html(pageCount);
}
$("#mCurr").html(pageIndex);
}
//首页
function topPage(){
pageIndex = 1;
setPageNo();
dealPage();
}
//上一页
function previousPage(){
if (pageIndex > 1){
pageIndex = pageIndex -1;
}else{
pageIndex = 1;
}
setPageNo();
dealPage();
}
//下一页
function nextPage(){
if (pageCount > pageIndex){
pageIndex = pageIndex + 1;
}else{
pageIndex = pageCount;
}
setPageNo();
dealPage();
}
//最后一页
function bottomPage(){
pageIndex = pageCount;
setPageNo();
dealPage();
}
//分组显示收放
function show(){
var obj2 = document.getElementById("imgs");
if (document.getElementById("dtree").style.display == ""){
obj2.src = "/images/right.gif";
document.getElementById("dtree").style.display = "none";
document.getElementById("dtreeTd").style.width = "0px";
}else{
obj2.src = "/images/left.gif";
document.getElementById("dtreeTd").style.width = document.getElementById("dtree").style.width;
document.getElementById("dtree").style.display = "";
}
}
//打印
function printInfo() {

var oldInfo = document.body.outerHTML;
document.body.innerHTML = document.getElementById('bak').outerHTML;
//window.document.getElementById("bak").outerHTML;
window.print();
//wb.execwb(7,1);打印预览
document.body.innerHTML = oldInfo;
}
//获取页面数据
function getPageSize(){
var xScroll, yScroll;
if (window.innerHeight && window.scrollMaxY) {
xScroll = document.body.scrollWidth;
yScroll = window.innerHeight + window.scrollMaxY;
} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
xScroll = document.body.scrollWidth;
yScroll = document.body.scrollHeight;
} else{ // Explorer Macwould also work in Explorer 6 Strict, Mozilla and Safari
xScroll = document.body.offsetWidth;
yScroll = document.body.offsetHeight;
}
var windowWidth, windowHeight;
if (self.innerHeight) { // all except Explorer
windowWidth = self.innerWidth;
windowHeight = self.innerHeight;
} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
windowWidth = document.documentElement.clientWidth;
windowHeight = document.documentElement.clientHeight;
} else if (document.body) { // other Explorers
windowWidth = document.body.clientWidth;
windowHeight = document.body.clientHeight;
}
// for small pages with total height less then height of the viewport
if(yScroll < windowHeight){
pageHeight = windowHeight;
} else {
pageHeight = yScroll;
}
if(xScroll < windowWidth){
pageWidth = windowWidth;
} else {
pageWidth = xScroll;
}
arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight,xScroll,yScroll)
return arrayPageSize;
//return pageHeight;
}

function opera(groupId,leafNod,groupParent){
$.ajax({
url : "/HrbSystemT/manageDriver.do?command=QIntSort",
type : "post",
dataType : "json",
data : {"groupId":groupId,"groupParent":groupParent},
success : update_page
});
}
//每次分页后处理
function dealPage(){
$("#table1>tr").remove();
if (mJson != null && mJson.length > 0){
var mMax = pageIndex*pageSize;
if (pageIndex == pageCount){
mMax = mJson.length;
}
for(var i=(pageIndex-1)*pageSize; i<mMax; i++){
var tr = $("<tr></tr>");
var td = $("<td></td>");
var td1 = $("<td></td>");
td.append(mJson[i].driverName);
td1.append(mJson[i].intEgral);
tr.append(td);
tr.append(td1);
$("#table1").append(tr);
}
document.getElementById("dtree").style.height = getPageSize()[5]-25+"px";
}
}

jsp:

<div id="bak" >
<table class=table1 width="100%" border=1 cellspacing="0" cellpadding="3" bordercolordark="#ffffff" bordercolorlight="#003366">
<tr>
<td class=td1 bgcolor="#ebebeb" align="center">司机姓名</td>
<td class=td1 bgcolor="#ebebeb" align="center">积分</td>
</tr>
<tbody id= "table1"></tbody>
</table>
<table width="100%" border="0">
<tr>
<td nowrap class="rd19" height="2" width="36%"> <div align="left"><font color="#666666"> 总页数: </font><font color="#666666" id="mSum"></font><font color="#666666"> 页     当前页号:</font> <font color="#666666" id="mCurr"></font></div></td>
<td nowrap class="rd19" width="64%"> <div align="right">
<a href="javaScript:topPage()">首 页</a>  
<a href="javaScript:previousPage()">上一页</a>  
<a href="javaScript:nextPage()">下一页</a>  
<a href="javaScript:bottomPage()">最后一页</a>  </div>
</td>
</tr>
</table>
</div>