本文實例講述了jQuery+ajax實現文章點贊功能的方法。分享給大家供大家參考，具體如下：
前幾日有童鞋問我索要本站右上角的點贊功能，麥蔥左思右想，決定把這功能分享出來,希望此功能對各位會帶來方便哦。
代碼很簡單，jQuery+php實現的。
jQuery代碼：
jQuery(document).ready(function($) {$(".zan").click(function(e){var $i=$(".zan i"), $b=$("<b>").text("+1"), n=parseInt($i.text());$b.css({"bottom":0,"z-index":999,});$i.text(n+1);$(".zan").append($b);$b.animate({"bottom":100,"opacity":0},1000,function(){$b.remove();});var d = setInterval(function(){clearInterval(d);if($(".zan b").length == 1){$.post("",{zan:$i.text()})}},1000)e.stopPropagation();});});php代碼：
<?php$path = "zan.txt";if(isset($_POST['zan'])){$num = (int)$_POST['zan'];$save = fopen($path,"w");fwrite($save,$num);fclose($save);echo "good";exit();$zan = file_exists($path) ? intval(file_get_contents($path)) : 0;}?>html代碼：
<div class="main"><div class="zan"><em>看官們給了 <i><?php echo $zan; ?></i> 個贊</em></div></div>
配上合適的css樣式：
.main { position: relative; font-size: 10pt; line-height: 18px; margin: 40px auto; width: 800px; height: 170px; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; -o-user-select: none; user-select: none;}.zan { position: absolute; top: 20%; left: 45%; width: 160px; height: 110px; background: url("zan.jpg") center no-repeat; cursor: pointer; opacity: 0.85; }.zan:active { opacity: 1; }.zan em { position: absolute; color: #333; font-style: normal; bottom: -15px; width: 100%; text-align: center; }.zan i { font-style: normal; color: #E94F06; }.zan b { position: absolute; color: #E94F06; font-style: normal; bottom: -15px; width: 100%; text-align: center; }就是這樣，簡單吧！
下面是完整代碼：
<?php$path = "zan.txt";if(isset($_POST['zan'])){$num = (int)$_POST['zan'];$save = fopen($path,"w");fwrite($save,$num);fclose($save);echo "good";exit();}$zan = file_exists($path) ? intval(file_get_contents($path)) : 0;?><!doctype html><html><head><meta charset="utf-8"><title>我要點贊</title><style>.main { position: relative; font-size: 10pt; line-height: 18px; margin: 40px auto; width: 800px; height: 170px; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; -o-user-select: none; user-select: none;}.zan { position: absolute; top: 20%; left: 45%; width: 160px; height: 110px; background: url("zan.jpg") center no-repeat; cursor: pointer; opacity: 0.85; }.zan:active { opacity: 1; }.zan em { position: absolute; color: #333; font-style: normal; bottom: -15px; width: 100%; text-align: center; }.zan i { font-style: normal; color: #E94F06; }.zan b { position: absolute; color: #E94F06; font-style: normal; bottom: -15px; width: 100%; text-align: center; }</style></head><body><div class="main"><div class="zan"><em>看官們給了 <i><?php echo $zan; ?></i> 個贊</em></div></div><script src="jquery.min.js"></script><script>jQuery(document).ready(function($) {$(".zan").click(function(e){var $i=$(".zan i"), $b=$("<b>").text("+1"), n=parseInt($i.text());$b.css({"bottom":0,"z-index":999,});$i.text(n+1);$(".zan").append($b);$b.animate({"bottom":100,"opacity":0},1000,function(){$b.remove();});var d = setInterval(function(){clearInterval(d);if($(".zan b").length == 1){$.post("",{zan:$i.text()})}},1000)e.stopPropagation();});});</script></body></html>標題都說了是無上限點贊的，So，麥蔥告訴大家個小訣竅：
/* 怒贊 */jQuery.noConflict();function zan() {setInterval(function () {jQuery(".zan").click();zan();}, 600)}zan();當然，如果你使用了加速樂防CC（麥蔥就是），怒贊請求量過多，會被屏蔽掉哦！除非你取消掉jQuery里的POST
希望本文所述對大家jQuery程序設計有所幫助。
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