Detailed explanation of the steps to implement the function of adding categories to blog posts using PHP+Ajax-PHP Tutorial-php.cn

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Detailed explanation of the steps to implement the function of adding categories to blog posts using PHP+Ajax

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May 17, 2018 pm 01:46 PM

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This time I will bring you a detailed explanation of the steps to implement the function of adding categories to blog posts with PHP Ajax. What are the precautions for implementing the function of adding categories to blog posts with PHP Ajax? Here is a practical case, let’s take a look.

1. Code

fun.js

function saveType(typename, username){
  if(typename==&#39;&#39;){   //判断博客类别是否为空
    alert(&#39;请输入类别名称！&#39;);
  }else if(username==&#39;&#39;){   //判断用户名是否为空
    alert(&#39;请输入用户名！&#39;);
  }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 == &#39;y&#39;){  //判断保存是否成功，并给出提示
          alert(&#39;类别添加成功！&#39;);
        }else{
          alert(&#39;类别添加失败！&#39;);
        }
      }
    }
  }
}

Copy after login

conn.php

<?php
$host = &#39;127.0.0.1&#39;;
$userName = &#39;root&#39;;
$password = &#39;root&#39;;
$connID = mysql_connect($host, $userName, $password);
mysql_select_db(&#39;db_database27&#39;, $connID);
mysql_query(&#39;set names gbk&#39;);
?>

Copy after login

index.php

<?php
require_once &#39;conn.php&#39;;
?>
<!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[&#39;typename&#39;]?></a></p></td>
   </tr>
   <tr>
    <td bgcolor="#F2F2F2" height="12"><p align="left">发布人：
     <?= $result[&#39;username&#39;]?>
     </a></p></td>
   </tr>
   <?php
       }while($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>

Copy after login

saveType.php

<?php
require_once &#39;conn.php&#39;;
?>
<!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[&#39;typename&#39;]?></a></p></td>
   </tr>
   <tr>
    <td bgcolor="#F2F2F2" height="12"><p align="left">发布人：
     <?= $result[&#39;username&#39;]?>
     </a></p></td>
   </tr>
   <?php
       }while($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>

Copy after login

2. Run the results

##Believe it or not After reading the case in this article, you have mastered the method. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

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