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php ajax.$post实现攒,顶,踩的功能

WBOY
WBOYOriginal
2016-05-25 16:50:14924browse

攒,顶,踩功能主要用于评论中这里我们来做一个简单基于jquery ajax与php的mysql实现的攒,顶,踩功能。

php应用越来越多,也越来越广泛,为了增加网站的丰富多彩,从而出现了很多新的技术。ajax是现代网站中不能缺少的一项技术,他可以异步刷新数据,而实现很多效果,比如刷新验证码,微博中的攒功能,都是运用这个。

主页文件index.php,代码如下:

<script type="text/javascript" src="/Public/js/jquery.min.js"></script> 
	<script type="text/javascript" src="finger_ajax.js"></script> 
	<?php 
	 header("Content-type:text/html;charset=utf-8"); 
	 include "finger_ajax.php"; 
	 $sql = "select * from finger_ajax"; 
	 $res = mysql_query($sql,$link); 
	 while($row = mysql_fetch_array($res)){ 
	  echo "<p>".$row[&#39;title&#39;]." <a href=&#39;#&#39; onclick=&#39;finger(".$row[&#39;id&#39;].")&#39;><img  src=&#39;finger.jpg&#39;/ alt="php ajax.$post实现攒,顶,踩的功能 " >攒一下(<span class=&#39;finger".$row[&#39;id&#39;]."&#39;>".$row[&#39;finger&#39;]."</span>)</a></p> "; 
	 } 
	

处理ajax请求及配置信息文件finger_ajax.php,代码如下:

<?php 
	 /**"攒" 功能 响应ajax请求*/ 
	 //配置 
	 $dbHost = "localhost"; 
	 $dbUser = "root"; 
	 $dbPass = "dddddd"; 
	 $dbName = "test"; 
	 $dbCharset = "utf8"; 
	 
	 
	 $link = mysql_connect($dbHost,$dbUser,$dbPass) or die(mysql_error()); 
	 mysql_query("set names ".$dbCharset); 
	 mysql_select_db($dbName); 
	 // End 
	 //接受对应的id 
	 if(!emptyempty($_POST[&#39;id&#39;])){ 
	  $id = $_POST[&#39;id&#39;]; 
	  //"攒"加1 
	  $sql = "update finger_ajax set finger=finger+1 where id=$id;"; 
	  if(mysql_query($sql,$link)){ 
	   echo "ok"; 
	  }else{ 
	   echo "failed"; 
	  } 
	 } 
	

js文件finger_ajax.js代码如下:

//攒 js 
	function finger(topic_id){ 
	 $.post("finger_ajax.php", { "id": topic_id }, 
	   function(data){ 
	     if(data=="ok"){ 
	   alert("感谢您的支持!"); 
	  }else{ 
	   alert("对不起,失败了!"); 
	  } 
	   }, "text");  
	 //获取当前"攒"的次数并加1 
	 var finger = parseInt($(".finger"+topic_id).html())+1; 
	 //更新"攒"的次数 
	 $(".finger"+topic_id).html(finger); 
	}

数据库代码finger_ajax.sql代码如下:

DROP TABLE IF EXISTS `finger_ajax`; 
	CREATE TABLE `finger_ajax` ( 
	  `id` int(11) NOT NULL AUTO_INCREMENT, 
	  `title` varchar(50) NOT NULL DEFAULT &#39;&#39;, 
	  `finger` int(11) NOT NULL DEFAULT &#39;0&#39;, 
	  PRIMARY KEY (`id`) 
	) ENGINE=MyISAM AUTO_INCREMENT=3 DEFAULT CHARSET=utf8; 
	 
	 
	-- ---------------------------- 
	-- Records of finger_ajax 
	-- ---------------------------- 
	INSERT INTO `finger_ajax` VALUES (&#39;1&#39;, &#39;今天天气还不错哦!去做点什么好呢?&#39;, &#39;10&#39;); 
	INSERT INTO `finger_ajax` VALUES (&#39;2&#39;, &#39;欢迎来到 www.111cn.net,国庆将至,祝大家国庆节快乐!!&#39;, &#39;3&#39;);

               
               

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