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); 
    }) 
}

$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;

最后记得在raty评分表里面加一条数据。

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