ajax combined with mysql database to achieve partial data refresh
This time I will bring you ajax combinationmysql databaseTo achieve partial data refresh, ajax combined with mysql database to achieve partial data refreshWhat are the precautions, the following is a practical case, one Get up and take a look.
Effect status: switch between status lock and non-lock by clicking on the lock status
1. Main program: 01.php imports smarty and mysql classes, and obtains the data import list template
<?php
include './include/Mysql.class.php';
include './libs/Smarty.class.php';
$db=new Mysql;
$smarty=new Smarty;
$lists=$db->getALL('users');
$smarty->assign('lists',$lists);
$smarty->display('list.html');
?>2. The list template uses smarty Traverse the template data and display it, in which ajax is called to change the lock status
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8>
<title>用户权限展示表</title>
</head>
<body>
<table align="center" border="1" width="500">
<center><h2>用户权限表</h2></center>
<tr>
<th>uid</th><th>用户名</th><th>密码</th><th>锁定状态</th><th>角色</th>
</tr>
{foreach $lists as $list}
<tr align="center">
<td>{$list.uid}</td>
<td>{$list.username}</td>
<td>{$list.password}</td>
{if $list.is_lock==1}
<td><a href="javascript:lock(0,{$list.uid});" rel="external nofollow" >锁定</a></td>
{else}
<td><a href="javascript:lock(1,{$list.uid})" rel="external nofollow" ;>取消锁定</a></td>
{/if}
{if $list.role==1}
<td>管理员</td>
{else}
<td>编辑者</td>
{/if}
</tr>
{/foreach}
</table>
</body>
<script type="text/javascript">
function lock(lock,uid){
//创建ajax对象
var xhr=new XMLHttpRequest();
//打开一个链接
xhr.open('get','02.php?is_lock='+lock+"&uid="+uid);
//发送ajax请求
xhr.send(null);
//设置回调、监听函数
xhr.onreadystatechange=function(){
//如果ajax状态码响应正常且网络正常，获取响应文本
if(xhr.readyState==4&&xhr.status==200){
if(xhr.responseText){
window.location.reload();
}else{
alert("切换状态失败！");
}
}
}
}
</script>
</html>3.ajax response script, receives the data passed by ajax through the get method, changes the database content and The response text is sent back to the js script
<?php
include './include/Mysql.class.php';
$lock=$_GET['is_lock'];
$uid=$_GET['uid'];
$db=new Mysql;
$result=$db->update('users',"is_lock=$lock","uid=$uid");
if($result){
echo true;
}else{
echo false;
}
?>I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!
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