用ajax实现对数据库的查询以及对查询数据进行分页
主页面代码
<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}
</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>
js代码
<script type="text/javascript">
var page = 1; //当前页 定义一个变量 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);//把数据返回表格
}
});
}
functionLoadXinXi()
{
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> ";
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> ";
}
else
{
str += "<span class=‘list‘ bs=‘"+i+"‘>"+i+"</span> ";
}
}
}
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>
处理页面1
<?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);
处理页面2
<?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);
时间： 2024-10-22 01:43:16