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  • php ajax 分页utf8

    好的东东大家一起分享,今天弄了个ajax分页.

    挺简单的,主要是我们要理解ajax的工作原理.

    page.php
    <title>ajax分页演示</title>
    <script language="javascript" src="ajaxpg.js"></script>

    <div id="result">
    <?php
    //获取get传过来的值
    $page=isset($_GET['page'])?intval($_GET['page']):1;      
    $num=10;                                   
    //数据库连接
    $db=mysql_connect("localhost","root","fkedwgwy");       
    mysql_select_db("testerp");
    //解决乱码问题               
    mysql_query("SET NAMES 'utf-8'");
    //查询获取最大记录数
    $result=mysql_query("select * from bookinfo");
    $total=mysql_num_rows($result)or die(mysql_error());
    $url='test.php';
    $pagenum=ceil($total/$num);                                  
    $page=min($pagenum,$page);
    $prepg=$page-1;
    $nextpg=($page==$pagenum ? 0 : $page+1);
    $offset=($page-1)*$num;                                    
    $pagenav="显示第 <B>".($total?($offset+1):0)."</B>-<B>".min($offset+10,$total)."</B> 条记录,共 $total 条记录&nbsp;";
    if($pagenum<=1) return false;
    $pagenav.=" <a href=javascript:dopage('result','$url?page=1');>首页</a> ";
    if($prepg) $pagenav.=" <a href=javascript:dopage('result','$url?page=$prepg');>前页</a> "; else $pagenav.=" 前页 ";
    if($nextpg) $pagenav.=" <a href=javascript:dopage('result','$url?page=$nextpg');>后页</a> "; else $pagenav.=" 后页 ";
    $pagenav.=" <a href=javascript:dopage('result','$url?page=$pagenum');>尾页</a> ";
    $pagenav.="</select> 页,共 $pagenum 页";
    //错误信息
    If($page>$pagenum){
           Echo "Error : Can Not Found The page ".$page;
           Exit;
    }
     //获取所需要显示的数据
    $info=mysql_query("select * from bookinfo limit $offset,$num"); 
    While($it=mysql_fetch_array($info)){
           Echo $it['username'];
        echo "<br>";
    }  
    //显示数据
    echo"<br>";
    echo $pagenav;//输出分页导航
    ?>
    </div>


    ajax.js

    var http_request=false;
      function send_request(url){//初始化,指定处理函数,发送请求的函数
        http_request=false;
     //开始初始化XMLHttpRequest对象
     if(window.XMLHttpRequest){//Mozilla浏览器
      http_request=new XMLHttpRequest();
      if(http_request.overrideMimeType){//设置MIME类别
        http_request.overrideMimeType("text/xml");
      }
     }
     else if(window.ActiveXObject){//IE浏览器
      try{
       http_request=new ActiveXObject("Msxml2.XMLHttp");
      }catch(e){
       try{
       http_request=new ActiveXobject("Microsoft.XMLHttp");
       }catch(e){}
      }
        }
     if(!http_request){//异常,创建对象实例失败
      window.alert("创建XMLHttp对象失败!");
      return false;
     }
     http_request.onreadystatechange=processrequest;
     //确定发送请求方式,URL,及是否同步执行下段代码
        http_request.open("GET",url,true);
     http_request.send(null);
      }
      //处理返回信息的函数
      function processrequest(){
       if(http_request.readyState==4){//判断对象状态
         if(http_request.status==200){//信息已成功返回,开始处理信息
       document.getElementById(reobj).innerHTML=http_request.responseText;
      }
      else{//页面不正常
       alert("您所请求的页面不正常!");
      }
       }
      }
      function dopage(obj,url){
       document.getElementById(obj).innerHTML="正在读取数据...";
       send_request(url);
       reobj=obj;
       }
     这就是实例.您可以到这里下载实例

    http://download.csdn.net/source/473512

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  • 原文地址:https://www.cnblogs.com/fengju/p/6174108.html
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