php ajax 静态分页过程形式

php ajax 静态分页过程形式,扩展性不是很好 ，但比较适合新手学习。

 
js 端 及判断 
<script language='javascript' > 
$(function(){ 
//var url=$(this)[0].location.href; 
//alert(url); 
goPageFirst(); 
$('#selpage').bind('change',goPage); 
}); 
//返回当前页数 
function getNowPage() 
{ 
return parseInt($('#nowPage').html()); 
} 
//返回每页显示的条数 
function getPer() 
{ 
return $('#perPage').val(); 
} 
//返回总记录数 
function getTotal() 
{ 
return parseInt($('#total').html()); 
} 
//返回总页数 
function getAllPage() 
{ 
return parseInt($('#allpage').html()); 
} 
//组合字符串参数 
function getData(act) 
{ 
var target=1; 
var now=getNowPage()+1; 
var per=getPer(); 
var sum=getTotal(); 
var allpage=getAllPage(); 
switch(act) 
{ 
case 'first': 
target=1; 
break; 
case 'prev': 
target=now>1?now-1:1; 
break; 
case 'next': 
target=now+1>allpage?now:1; 
break; 
case 'last': 
target=allpage>0?allpage:1; 
break; 
case 'constans': 
target=$('#selpage').val()>0?$('#selpage').val():1; 
default : 
target=1; 
} 
var data="check="+act+"&nowpage="+now+"&perpage="+per+'&target='+target; 
alert(data); 
return data; 
} 
//执行第一页 
function goPageFirst() 
{ 
var param=getData('first'); 
http_post(param); 
} 
//执行上一页 
function goPagePrev() 
{ 
var param=getData('prev'); 
http_post(param); 
} 
//执行下一页 
function goPageNext() 
{ 
var param=getData('next'); 
http_post(param); 
} 
//执行最后页 
function goPageLast() 
{ 
var param=getData('last'); 
http_post(param); 
} 
//选中到指定页面 
function goPage() 
{ 
var param=getData('constans'); 
http_post(param); 
} 
//post 请求数据加载 
function http_post(db) 
{ 
$.post('./mysql.php',db,function(data){ 
responseAjax(data); 
},'text'); 
} 
//返回数据的调处理 
function responseAjax(msg) 
{ 
//alert(msg); 
//alert(msg.content); 
//$('#listDiv').html(msg.content); 
$('#listDiv').html(msg); 
} 
server端 判断及实现 
//@autor [email protected] 
mb_internal_encoding('gb2312'); 
$con=mysql_connect("127.0.0.1","root","12345678") or die("连接失败"); 
$m=mysql_select_db("ec",$con); 
$sql = 'SELECT `attr_id`,`cat_id`,`attr_name` 
FROM `ecs_attribute` '; 
$rs = mysql_query($sql ); 
$count = mysql_num_rows($rs); //返回记录总数 
//echo $count; //总记录数 
//每页的记录数 10 
//求总页数 ceil($count/10) 
//echo '<hr >'; 
if(!isset($_POST['check'])) 
{ 
$set['id']=0; 
die('no access please!'); 
} 
if(isset($_POST['perpage']) && $_POST['perpage']>0 ) 
{ 
$per=$_POST['perpage']; 
} 
else 
{ 
$per=15; 
} 
$page = ceil($count/$per); 
//echo $page; 
if(!isset($_POST['nowpage'])) 
{ 
$nowPage=1; 
} 
else 
{ 
$nowPage = $_POST['nowpage']; 
} 
$start = ($nowPage-1)*$per+1; 
$sql = 'select `attr_id`,`cat_id`,`attr_name` from `ecs_attribute` limit '.$start.','. $per; 
//$sql = 'select `attr_id`,`cat_id`,`attr_name` from `ecs_attribute` limit 10 offset 20'; 
$rs = mysql_query($sql ); 

$str = "<table id='content'> 
<tr><th>属性编号</th><th>类型编号</th><th>属性名字</th></tr>"; 
while($row = mysql_fetch_assoc($rs)){ 
$str .='<tr><td>'.$row['attr_id'].'</td><td>'.$row['cat_id'].'</td><td>'.$row['attr_name'].'</td><tr>'; 
} 
$str.="</table> 
<table id='page_list'> 
<tr><td><div><span>总计<span id='total'>".$count."</span>个记录分为<span id='allpage'>".$page."</span>页当前第<span id='nowPage'>".$nowPage."</span>页,每页<input type='text' id='perPage' value='".$per."'/> |  
<a href='javascript:void(0)' onclick='goPageFirst()'>第一页</a> 
<a href='javascript:void(0)' onclick='goPagePrev()'>上一页</a> 
<a href='javascript:void(0)' onclick='goPageFirst()'>下一页</a> 
<a href='javascript:void(0)' onclick='goPageFirst()'>最末页 </a> 
<select id='selpage' >"; 
for($i=1;$i <=$page;$i++) 
{ 
if($nowPage==$i) 
{ 
$str .= "<option selected >".$i."</option>"; 
} 
else 
{ 
$str .= "<option >".$i."</option>"; 
} 
} 
$str .="</select> 
</span></div></td></tr> 
</table>"; 
echo mb_convert_encoding($str,'UTF-8','gb2312'); 
//$set['content']=$str; 
//echo json_encode($set); 
?>