补充ajax分页的代码

1.主页代码

<!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>无标题文档</title>
<script src="jquery-1.11.2.min.js"></script>
<style type="text/css">
.dangqian{ background-color:#69F}     给显示的当前页数加背景
</style>
</head>

<body>

<div>
<input type="text" id="key" />
<input type="button" value="查询" id="chaxun" />
</div>

<table width="100%" border="1" cellpadding="0" cellspacing="0">
    <tr>
        <td>代号</td>
        <td>名称</td>
        <td>父级代号</td>
    </tr>
    
    <tbody id="nr">
    
    
    
    </tbody>
    
</table>

<div id="xinxi">

</div>

</body>
<script type="text/javascript">

var page = 1; //当前页

Load(); //加载数据
LoadXinXi(); //加载分页信息

//查询
$("#chaxun").click(function(){
        page = 1;
        Load(); //加载数据
        LoadXinXi(); //加载分页信息
    })

function Load()
{
    var key = $("#key").val(); //查询条件
    
    $.ajax({
            url:"chuli.php",
            data:{page:page,key:key},
            type:"POST",
            dataType:"JSON",
            success: function(data){
                    var str = "";
                    for(var k in data)
                    {
                        str +="<tr><td>"+data[k].AreaCode+"</td><td>"+data[k].AreaName+"</td><td>"+data[k].ParentAreaCode+"</td></tr>";
                    }
                    $("#nr").html(str);
                }
        });
}

function LoadXinXi()
{
    var str = "";
    var minys = 1;
    var maxys = 1;
    var key = $("#key").val();
    
    //查总页数
    $.ajax({
            async:false,
            url:"zys.php",
            data:{key:key},
            type:"POST",
            dataType:"TEXT",
            success: function(d){
                    maxys = d;
                }
        });
    
    str += "<span>总共："+maxys+"页</span> &nbsp;";
    str += "<span id='prev'>上一页</span>";
    
    for(var i=page-2;i<page+3;i++)
    {
        if(i>=minys && i<=maxys)
        {
            if(i==page)
            {
                str += "<span class='dangqian' bs='"+i+"'>"+i+"</span> &nbsp;";
            }
            else
            {
                str += "<span class='list' bs='"+i+"'>"+i+"</span> &nbsp;";
            }
        
        }
    }
     
    str += "<span id='next'>下一页</span>"; 
    
    $("#xinxi").html(str);
    
    //给上一页添加点击事件
    $("#prev").click(function(){
            page = page-1;
            if(page<1)
            {
                page=1;
            }
            Load(); //加载数据
            LoadXinXi(); //加载分页信息
        })
    //给下一页加点击事件
    $("#next").click(function(){
            page = page+1;
            if(page>maxys)
            {
                page=maxys;
            }
            Load(); //加载数据
            LoadXinXi(); //加载分页信息
        })
    //给中间的列表加事件
    $(".list").click(function(){
            page = parseInt($(this).attr("bs"));
            Load(); //加载数据
            LoadXinXi(); //加载分页信息
        })
}

</script>
</html>

2.处理页面代码

<?php
include("DBDA.class.php");
$db = new DBDA();

$page = $_POST["page"];
$key = $_POST["key"];
$num = 20;
$tiao = ($page-1)*$num;

$sql = "select * from chinastates where areaname like '%{$key}%' limit {$tiao},{$num}";

echo $db->JSONQuery($sql);

3.计算总数的页面代码

<?php
include("DBDA.class.php");
$db = new DBDA();

$key = $_POST["key"];
$num = 20;

$sql = "select count(*) from chinastates where areaname like '%{$key}%'";

$zts = $db->StrQuery($sql);

echo ceil($zts/$num);

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原文地址：https://www.cnblogs.com/xingyue1988/p/6396928.html