案例1
1.js_pageusers.html
<!DOCTYPE html> <html>
<head>
<title>js_pageusers.html</title> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8"> <script type="text/javascript" src="pageuser.js"></script>
</head> <body>
<div id="one" align="center">
<div>
用户名: <input type="text" id="userName" />
性别： <input type="text" id="userSex" /> 职业： <input type="text" id="userRole" /> <br /> <br />
<input type="button" id="addUsers" value="添加用户" />
<input type="button" id="updateUsers" value="更新用户" />
</div>
<br /> <br />
<div>
<table border="1px" cellpadding="" cellspacing="" width="500px;">
<thead>
<th>用户名</th>
<th>性别</th>
<th>职业</th>
</thead>
<tbody id="showUsers"></tbody>
</table> <div>
<input type="button" id="firstPage" value="首页" /> <input
type="button" id="backPage" value="上一页" /> <input type="button"
id="nextPage" value="下一页" /> <input type="button" id="lastPage"
value="末页" /> <span id="msg"></span>
</div>
</div>
</div>
</body> </html>
2.pageuser.js
function setPage(){
var pagesize = ;//每页显示的记录数
var recondsize = ;//总记录数
var countpage = ;//总页数
var nowpage= ;
var users = new Array();//存放所有的记录
var start = ; //保存当前页开始的记录
var end = ;//保存当前页结束的记录
var domUserName = $("userName");
var domUserSex = $("userSex");
var domUserRole = $("userRole");
var domshowUsers = $("showUsers");
var addBtn = $("addUsers");
//为按钮注册事件
addBtn.onclick = function() {
//创建user对象
var user = new User(domUserName.value, domUserSex.value,
domUserRole.value);
//把user对象存放数组中
users.push(user);
recondsize = users.length; //得出总记录数
//计算出总页数
countpage = recondsize % pagesize == ? recondsize / pagesize : Math
.ceil(recondsize / pagesize);
if (recondsize > pagesize) { //当总记录大于pagezie 思路 从后往前数3个数
start = recondsize-pagesize;
end=recondsize;
}else{ // pagesize start =1;
start=;
end=recondsize; //end=实际的个数 就是 recondsize
}
//调用显示user的方法
showUser(users,start,end,recondsize,countpage,domshowUsers);
}
//获取分页相关的按钮
var firstPage = $("firstPage");
var backPage = $("backPage");
var nextPage = $("nextPage");
var lastPage = $("lastPage");
firstPage.onclick = function() {
nowpage = ;
if (recondsize<= pagesize && recondsize > ) {
start = ;
end = recondsize;
}else{
start=;
end=pagesize;
}
showUser(users,start,end,recondsize,countpage,domshowUsers);
}
backPage.onclick = function() {
nowpage = nowpage-;//重新赋值
if(nowpage<=){
nowpage=;
}
if (recondsize <= pagesize && recondsize > ) {
start = ;
end = recondsize;
}else{
start=(nowpage-)*pagesize;
end = (nowpage-)*pagesize+pagesize;
}
showUser(users,start,end,recondsize,countpage,domshowUsers);
}
nextPage.onclick = function() {
nowpage = nowpage+;//重新赋值
if(nowpage>=countpage){
nowpage=countpage;
}
if (recondsize <= pagesize && recondsize > ) {
start = ;
end = recondsize;
}else{
start=(nowpage-)*pagesize;
if((nowpage-)*pagesize+pagesize>=recondsize){
end = recondsize;
}else{
end =(nowpage-)*pagesize+pagesize;
}
}
showUser(users,start,end,recondsize,countpage,domshowUsers);
}
lastPage.onclick = function() {
nowpage = countpage;//重新赋值
if (recondsize <= pagesize && recondsize > ) {
start = ;
end = recondsize;
}else{
start=(nowpage-)*pagesize;
end = recondsize;
}
showUser(users,start,end,recondsize,countpage,domshowUsers);
}
}
//创建一个Function函数 函数是保存User对象数据的
function User(name, sex, role) {
this.name = name;
this.sex = sex;
this.role = role;
}
function $(id) {
return document.getElementById(id);
}
function showUser(users,start,end,recondsize,countpage,domshowUsers){
//清空数据
for ( var jj = ; jj < domshowUsers.childNodes.length;) {
domshowUsers.removeChild(domshowUsers.childNodes[jj]);
}
//for循环添加的
for(var i=start;i<end;i++){
var user = users[i];//考虑
//创建一行
var tr = document.createElement("tr");
//创建列
var td1 = document.createElement("td");
//创建文本节点
var td1TextNode = document.createTextNode(user.name);
//文本节点添加到td中
td1.appendChild(td1TextNode);
//创建列
var td2 = document.createElement("td");
//创建文本节点
var td2TextNode = document.createTextNode(user.sex);
//文本节点添加到td中
td2.appendChild(td2TextNode);
//创建列
var td3 = document.createElement("td");
//创建文本节点
var td3TextNode = document.createTextNode(user.role);
//文本节点添加到td中
td3.appendChild(td3TextNode);
//把列添加到行中
tr.appendChild(td1);
tr.appendChild(td2);
tr.appendChild(td3);
//把行添加到tbody中
if(domshowUsers.hasChildNodes()){
domshowUsers.insertBefore(tr,domshowUsers.firstChild);//再最后一个数据之前添加数据
}else{
domshowUsers.appendChild(tr);//添加到末尾
}
}
document.getElementById("msg").innerHTML = "总共：{" + recondsize
+ "}条记录,共{" + countpage + "}页";
}案例2
<!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=UTF-8" />
<title>js分页技术</title>
</head>
<body>
<table width="" border="" cellpadding="" cellspacing=""
bgcolor="#999999">
<tbody id="table2">
<tr>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
</tr>
<tr>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
</tr>
<tr>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
</tr>
<tr>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
</tr>
<tr>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
</tr>
<tr>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
</tr>
<tr>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
</tr>
<tr>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
</tr>
<tr>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
</tr>
<tr>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
</tr>
<tr>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
<td bgcolor="#FFFFFF"> </td>
</tr>
</tbody>
</table>
<span id="spanFirst">第一页</span>
<span id="spanPre">上一页</span>
<span id="spanNext">下一页</span>
<span id="spanLast">最后一页</span> 第
<span id="spanPageNum"></span>页/共
<span id="spanTotalPage"></span>页
</body>
</html>
<script>
var theTable = document.getElementById("table2");
var totalPage = document.getElementById("spanTotalPage");
var pageNum = document.getElementById("spanPageNum");
var spanPre = document.getElementById("spanPre");
var spanNext = document.getElementById("spanNext");
var spanFirst = document.getElementById("spanFirst");
var spanLast = document.getElementById("spanLast");
var numberRowsInTable = theTable.rows.length;
var pageSize = ;
var page = ;
//下一页
function next() {
hideTable();
currentRow = pageSize * page;
maxRow = currentRow + pageSize;
if (maxRow > numberRowsInTable)
maxRow = numberRowsInTable;
for ( var i = currentRow; i < maxRow; i++) {
theTable.rows[i].style.display = '';//currentRow ~ maxRow 内显示出来
}
page++;
if (maxRow == numberRowsInTable) {
nextText();
lastText();
}
showPage();
preLink();
firstLink();
}
//上一页
function pre() {
hideTable();
page--;
currentRow = pageSize * page;
maxRow = currentRow - pageSize;
if (currentRow > numberRowsInTable)
currentRow = numberRowsInTable;
for ( var i = maxRow; i < currentRow; i++) {
theTable.rows[i].style.display = '';
}
if (maxRow == ) {
preText();
firstText();
}
showPage();
nextLink();
lastLink();
}
//第一页
function first() {
hideTable();
page = ;
for ( var i = ; i < pageSize; i++) {
theTable.rows[i].style.display = '';
}
showPage();
preText();
nextLink();
lastLink();
}
//最后一页
function last() {
hideTable();
page = pageCount();
currentRow = pageSize * (page - );
for ( var i = currentRow; i < numberRowsInTable; i++) {
theTable.rows[i].style.display = '';
}
showPage();
preLink();
nextText();
firstLink();
}
function hideTable() {
for ( var i = ; i < numberRowsInTable; i++) {
theTable.rows[i].style.display = 'none';
}
}
function showPage() {
pageNum.innerHTML = page;
}
//总共页数
function pageCount() {
var count = ;
if (numberRowsInTable % pageSize != )
count = ;
return parseInt(numberRowsInTable / pageSize) + count;
} //显示链接
function preLink() {
spanPre.innerHTML = "<a href='javascript:pre();'>上一页</a>";
}
function preText() {
spanPre.innerHTML = "上一页";
}
function nextLink() {
spanNext.innerHTML = "<a href='javascript:next();'>下一页</a>";
}
function nextText() {
spanNext.innerHTML = "下一页";
}
function firstLink() {
spanFirst.innerHTML = "<a href='javascript:first();'>第一页</a>";
}
function firstText() {
spanFirst.innerHTML = "第一页";
}
function lastLink() {
spanLast.innerHTML = "<a href='javascript:last();'>最后一页</a>";
}
function lastText() {
spanLast.innerHTML = "最后一页";
}
//隐藏表格
function hide() {
for ( var i = pageSize; i < numberRowsInTable; i++) {
theTable.rows[i].style.display = 'none';
}
totalPage.innerHTML = pageCount();
pageNum.innerHTML = '';
nextLink();
lastLink();
}
hide();
</script>