jQuery+PHP实现购物商城常用的星级评分效果

function get_rate(rate) { 
 rate = rate.toString(); 
 var s; 
 var g; 
 $("#g").show(); 
 if (rate.length >= 3) { 
 s = 10; 
 g = 0; 
 $("#g").hide(); 
 } else if (rate == "0") { 
 s = 0; 
 g = 0; 
 } else { 
 s = rate.substr(0, 1); 
 g = rate.substr(1, 1); 
 } 
 $("#s").text(s); 
 $("#g").text("." + g); 
 $(".big_rate_up").animate({ 
 width: (parseInt(s) + parseInt(g) / 10) * 14, 
 height: 26 
 }, 
 1000); 
 $(".big_rate span").each(function() { 
 $(this).mouseover(function() { 
 $(".big_rate_up").width($(this).attr("rate") * 14); 
 $("#s").text($(this).attr("rate")); 
 $("#g").text(""); 
 }).click(function() { 
 var score = $(this).attr("rate"); 
 $("#my_rate").html("您的评分：<span>" + score + "</span>"); 
 $.ajax({ 
 type: "POST", 
 url: "ajax.php", 
 data: "score=" + score, 
 success: function(msg) { 
 //alert(msg); 
 if (msg == 1) { 
 $("#my_rate").html("<span>您已经评过分了！</span>"); 
 } else if (msg == 2) { 
 $("#my_rate").html("<span>您评过分了！</span>"); 
 } else { 
 get_rate(msg); 
 } 
 } 
 }); 
 }) 
 }) $(".big_rate").mouseout(function() { 
 $("#s").text(s); 
 $("#g").text("." + g); 
 $(".big_rate_up").width((parseInt(s) + parseInt(g) / 10) * 14); 
 }) 
}

get_rate(<?php echo $aver; ?>);

$score = $_POST['score']; 
if (isset($score)) { 
 $cookiestr = getip(); 
 $time = time(); 
 if (isset($_COOKIE['person']) && $_COOKIE['person'] == $cookiestr) { 
 echo "1"; 
 } elseif (isset($_COOKIE['rate_time']) && ($time - intval($_COOKIE['rate_time'])) < 60) { 
 echo "2"; 
 } else { 
 $query = mysql_query("update raty set voter=voter+1,total=total+'$score' where id=1"); 
 $query = mysql_query("select * from raty where id=1"); 
 $rs = mysql_fetch_array($query); 
 $aver = 0; 
 if ($rs) { 
 $aver = $rs['total'] / $rs['voter']; 
 $aver = round($aver, 1) * 10; 
 } 
 //设置COOKIE 
 setcookie("person", $cookiestr, time() + 3600 * 365); 
 setcookie("rate_time", time(), time() + 3600 * 365); 
 echo $aver; 
 } 
}

CREATE TABLE IF NOT EXISTS `raty` ( 
 `id` int(11) NOT NULL auto_increment, 
 `voter` int(10) NOT NULL default '0' COMMENT '评分次数', 
 `total` int(11) NOT NULL default '0' COMMENT '总分', 
 PRIMARY KEY (`id`) 
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8;