PHP和Ajax实现文章添加类别功能

互联网 18-3-30

本文主要和大家介绍了PHP+Ajax实现的博客文章添加类别功能,结合实例形式分析了php+ajax实现的数据交互、数据库连接、查询等相关操作技巧,需要的朋友可以参考下，希望能帮助到大家。

一. 代码

fun.js

function saveType(typename, username){    if(typename==''){   //判断博客类别是否为空      alert('请输入类别名称！');    }else if(username==''){   //判断用户名是否为空      alert('请输入用户名！');    }else{      var xmlObj;   //定义XMLHttpRequest对象      var urlData = "typename="+typename+"&username="+username;    //指定要发送的数据      if(window.ActiveXObject){   //判断浏览器是否支持ActiveXObject组件，如支持则通过ActiveXObject方式创建XMLHttpRequest对象        xmlObj = new ActiveXObject("Microsoft.XMLHTTP");      }else if(window.XMLHttpRequest){   //如果浏览器不支持ActiveXObject组件，则使用XMLHttpRequest组件创建XMLHttpRequest对象        xmlObj = new XMLHttpRequest();      }      xmlObj.onreadystatechange = callBackFun;   //指定回调函数      xmlObj.open("POST", "saveType.php", true);   //指定提交方法和页面      xmlObj.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");   //指定发送数据库类型      xmlObj.send(urlData);   //指定发送的数据      function callBackFun(){   //定义回调函数        if(xmlObj.readyState == 4 && xmlObj.status == 200){   //如果服务器端返回内容并无错误发生          if(xmlObj.responseText == 'y'){  //判断保存是否成功，并给出提示            alert('类别添加成功！');          }else{            alert('类别添加失败！');          }        }      }    }  }

conn.php

<?php  $host = '127.0.0.1';  $userName = 'root';  $password = 'root';  $connID = mysql_connect($host, $userName, $password);  mysql_select_db('db_database27', $connID);  mysql_query('set names gbk');  ?>

index.php

<?php  require_once 'conn.php';  ?>  <!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=gb2312" />  <title>添加类别</title>  <link rel="stylesheet" type="text/css" href="css/style.css" rel="external nofollow" rel="external nofollow" />  </head>  <script language="javascript" src="js/fun.js"></script>  <body>  <table border="0" align="center" cellpadding="0" cellspacing="0">   <tr>    <td><img src="images/banner.gif" width="608" height="109" /></td>   </tr>  </table>  <table width="200" height="7" border="0" align="center" cellpadding="0" cellspacing="0">   <tr>    <td></td>   </tr>  </table>  <table width="608" height="200" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#7ED227">   <tr>    <td width="150" bgcolor="#F6FEFE" valign="top">    <table width="150" border="0" cellpadding="0" cellspacing="1" bordercolor="#FFFFFF" bgcolor="#D6FEFE">     <?php       $sql = mysql_query("select typename,username from tb_type order by addtime desc", $connID);       $result = mysql_fetch_array($sql);       if ($result){         do{     ?>     <tr>      <td bgcolor="#A6E617" height="20"><p align="center"><a href="#" rel="external nofollow" rel="external nofollow" class="a1"><?= $result['typename']?></a></p></td>     </tr>     <tr>      <td bgcolor="#F2F2F2" height="12"><p align="left">发布人：       <?= $result['username']?>       </a></p></td>     </tr>     <?php         }while($result = mysql_fetch_array($sql));       }else{     ?>     <tr>      <td bgcolor="#A6E617" height="20">暂无文章类别</td>     </tr>     <?php       }     ?>  </table>    </td>    <td width="455" bgcolor="#FFFFFF" style="padding-left:30px; line-height:25px">    请输入博客类别：<br />        <input type="text" name="typename" size="30" id="typename" /><br /><br/>    发布人：<br />        <input type="text" name="username" size="30" id="username" /><br /><br/>    <input type="button" value="保存" onclick="saveType(typename.value, username.value)" />    </td>   </tr>  </table>  <table width="200" height="7" border="0" align="center" cellpadding="0" cellspacing="0">   <tr>    <td></td>   </tr>  </table>  <table width="608" height="70" border="0" align="center" cellpadding="0" cellspacing="0">   <tr>    <td background="images/bottom.gif"><p align="center">     <p align="center">『博客』 版权所有 <a href="http://www.mingri***.com" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="a1">吉林省**科技有限公司</a>!  未经授权禁止复制或建立镜像!<BR>       <BR>Copyright © <a href="http://www.mingri***.com" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="a1">www.mingri***.com</a> All Rights Reserved!<BR>     </p>    </p></td>   </tr>  </table>  </body>  </html>

saveType.php

<?php  require_once 'conn.php';  ?>  <!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=gb2312" />  <title>添加类别</title>  <link rel="stylesheet" type="text/css" href="css/style.css" rel="external nofollow" rel="external nofollow" />  </head>  <script language="javascript" src="js/fun.js"></script>  <body>  <table border="0" align="center" cellpadding="0" cellspacing="0">   <tr>    <td><img src="images/banner.gif" width="608" height="109" /></td>   </tr>  </table>  <table width="200" height="7" border="0" align="center" cellpadding="0" cellspacing="0">   <tr>    <td></td>   </tr>  </table>  <table width="608" height="200" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#7ED227">   <tr>    <td width="150" bgcolor="#F6FEFE" valign="top">    <table width="150" border="0" cellpadding="0" cellspacing="1" bordercolor="#FFFFFF" bgcolor="#D6FEFE">     <?php       $sql = mysql_query("select typename,username from tb_type order by addtime desc", $connID);       $result = mysql_fetch_array($sql);       if ($result){         do{     ?>     <tr>      <td bgcolor="#A6E617" height="20"><p align="center"><a href="#" rel="external nofollow" rel="external nofollow" class="a1"><?= $result['typename']?></a></p></td>     </tr>     <tr>      <td bgcolor="#F2F2F2" height="12"><p align="left">发布人：       <?= $result['username']?>       </a></p></td>     </tr>     <?php         }while($result = mysql_fetch_array($sql));       }else{     ?>     <tr>      <td bgcolor="#A6E617" height="20">暂无文章类别</td>     </tr>     <?php       }     ?>  </table>    </td>    <td width="455" bgcolor="#FFFFFF" style="padding-left:30px; line-height:25px">    请输入博客类别：<br />        <input type="text" name="typename" size="30" id="typename" /><br /><br/>    发布人：<br />        <input type="text" name="username" size="30" id="username" /><br /><br/>    <input type="button" value="保存" onclick="saveType(typename.value, username.value)" />    </td>   </tr>  </table>  <table width="200" height="7" border="0" align="center" cellpadding="0" cellspacing="0">   <tr>    <td></td>   </tr>  </table>  <table width="608" height="70" border="0" align="center" cellpadding="0" cellspacing="0">   <tr>    <td background="images/bottom.gif"><p align="center">     <p align="center">『博客』 版权所有 <a href="http://www.mingri***.com" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="a1">吉林省**科技有限公司</a>!  未经授权禁止复制或建立镜像!<BR>       <BR>Copyright © <a href="http://www.mingri***.com" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="a1">www.mingri***.com</a> All Rights Reserved!<BR>     </p>    </p></td>   </tr>  </table>  </body>  </html>

二. 运行结果