This article mainly introduces the php ajax non-refresh message system. Interested friends can refer to it. I hope it will be helpful to everyone.
This article introduces a non-refresh news message system, the most concise and easy-to-understand ajax non-refresh message system. The source code omits the process of accepting data verification. You can expand it according to your own needs. Below Go To Topic.
Core source code:
1. Configuration file: config.php, the code is as follows:
<?php
//数据库配置信息(用户名,密码，数据库名，表前缀等)
$cfg_dbhost = "localhost";
$cfg_dbuser = "root";
$cfg_dbpwd = "root";
$cfg_dbname = "ajaxdemo1";
$cfg_dbprefix = "";
$link = mysql_connect($cfg_dbhost,$cfg_dbuser,$cfg_dbpwd);
mysql_select_db($cfg_dbname);
mysql_query("set names utf8");
?>2. Process the request: deal.php, the code is as follows:
<?php
header("Content-type:text/html;charset=utf-8");
include "config.php";
//post接收数据,只是演示效果,这里就省去验证了
$name = $_POST['name'];
$content = $_POST['content'];
$sql = "insert into test (name,content) values ('{$name}','{$content}');";
$res = mysql_query($sql,$link);
if($res){
echo '{"name": "'.$name.'","content": "'.$content.'","status": "1"}';
}
?>3. Home page code: index.php, the code is as follows:
<!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>无刷新</title>
<link href="css/css.css" type="text/css" rel="stylesheet" />
<style type="text/css">
body{color:#555;font-size:14px;padding:0;margin:0;}
#form { background:#dedede; padding:10px 20px; width:300px;}
#show{ background:#f6f6f6;padding:10px 20px; width:300px;}
#show p{ margin:6px; font-size:13px; line-height:22px; border-bottom:1px dashed #cdcdcd;}
</style>
<script type="text/javascript" src="jquery-1.7.2.min.js"></script>
<script type="text/javascript">
$(function(){
$("#sub").click(function(){
//只是说明原理,然后这里省去了验证文本框内容的步骤，直接发送ajax请求
$.post("deal.php",{name : $("#name").val(), content : $("#content").val()}, function(data){
if(data.status){
var str = "<p><strong>"+data.name+"</strong> 发表了："+data.content+"</p>";
$("#show").prepend(str); //在前面追加
}else{
alert("评论失败");
}
}, 'json');
});
});
</script>
</head>
<body>
<p id="form">
<form action="deal.php" method="get" id="suggest_form">
用户名：<input type="text" name="name" id="name" /><br/>
内 容：<textarea name="content" id="content"></textarea>
<input type="button" value="发布" id="sub" />
</form>
</p>
<p id="show">
<?php
include "config.php";
$sql = "select * from test;";
$res = mysql_query($sql,$link);
while($row=mysql_fetch_array($res)){
echo "<p><strong>".$row['name']."</strong> 发表了：".$row['content']."</p>";
}
?>
</p>
</body>
</html>Database file, the code is as follows:
DROP TABLE IF EXISTS `test`; CREATE TABLE `test` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT, `name` varchar(64) NOT NULL, `content` text NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8;
Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.
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