<div class="vote"> 
  <div class="votetitle">您对编程素材网提供的文章的看法？</div> 
  <div class="votetxt">非常实用<span>完全看不懂</span></div> 
  <div class="red" id="red"> 
    <div class="redhand"></div> 
    <div class="redbar" id="red_bar"> 
      <span></span> 
      <p id="red_num"></p> 
    </div> 
  </div> 
  <div class="blue" id="blue"> 
    <div class="bluehand"></div> 
    <div class="bluebar" id="blue_bar"> 
      <span></span> 
      <p id="blue_num"></p> 
    </div> 
  </div> 
</div> 

 
.vote{width:288px; height:220px; margin:60px auto 20px auto;position:relative} 
.votetitle{width:100%;height:62px; background:url(icon.png) no-repeat 0 30px; font-size:15px} 
.red{position:absolute; left:0; top:90px; height:80px;} 
.blue{position:absolute; right:0; top:90px; height:80px;} 
.votetxt{line-height:24px} 
.votetxt span{float:right} 
.redhand{position:absolute; left:0;width:36px; height:36px; background:url(icon.png) no-repeat -1px -38px;cursor:pointer} 
.bluehand{position:absolute; right:0;width:36px; height:36px; background:url(icon.png) no-repeat -41px -38px;cursor:pointer} 
.grayhand{width:34px; height:34px; background:url(icon.png) no-repeat -83px -38px;cursor:pointer} 
.redbar{position:absolute; left:42px; margin-top:8px;} 
.bluebar{position:absolute; right:42px; margin-top:8px; } 
.redbar span{display:block; height:6px; background:red; width:100%;border-radius:4px;} 
.bluebar span{display:block; height:6px; background:#09f; width:100%;border-radius:4px; position:absolute; right:0} 
.redbar p{line-height:20px; color:red;} 
.bluebar p{line-height:20px; color:#09f; text-align:right; margin-top:6px} 

 
function getdata(url,sid){ 
  $.getJSON(url,{id:sid},function(data){ 
    if(data.success==1){ 
      var w = 208; //定义比例条的总宽度 
      //红方投票数 
      $("#red_num").html(data.red); 
      $("#red").css("width",data.red_percent*100+"%"); 
      var red_bar_w = w*data.red_percent-10; 
      //红方比例条宽度 
      $("#red_bar").css("width",red_bar_w); 
      //蓝方投票数 
      $("#blue_num").html(data.blue); 
      $("#blue").css("width",data.blue_percent*100+"%"); 
      var blue_bar_w = w*data.blue_percent; 
      //蓝方比例条宽度 
      $("#blue_bar").css("width",blue_bar_w); 
    }else{ 
      alert(data.msg); 
    } 
  }); 
} 

 
$(function(){ 
  //获取初始数据 
  getdata("vote.php",1); 
  //红方投票 
  $(".redhand").click(function(){ 
    getdata("vote.php?action=red",1); 
  }); 
  //蓝方投票 
  $(".bluehand").click(function(){ 
    getdata("vote.php?action=blue",1); 
  }); 
}); 

 
include_once("connect.php"); 
 
$action = $_GET['action']; 
$id = intval($_GET['id']); 
$ip = get_client_ip();//获取ip 
 
if($action=='red'){//红方投票 
  vote(1,$id,$ip); 
}elseif($action=='blue'){//蓝方投票 
  vote(0,$id,$ip); 
}else{//默认返回初始数据 
  echo jsons($id); 
} 

 
function vote($type,$id,$ip){ 
  $ip_sql=mysql_query("select ip from votes_ip where vid='$id' and ip='$ip'"); 
  $count=mysql_num_rows($ip_sql); 
  if($count==0){//还没有投票 
    if($type==1){//红方 
      $sql = "update votes set likes=likes+1 where id=".$id; 
    }else{//蓝方 
      $sql = "update votes set unlikes=unlikes+1 where id=".$id; 
    } 
    mysql_query($sql); 
     
    $sql_in = "insert into votes_ip (vid,ip) values ('$id','$ip')"; 
    mysql_query($sql_in); 
    if(mysql_insert_id()>0){ 
      echo jsons($id); 
    }else{ 
      $arr['success'] = 0; 
      $arr['msg'] = '操作失败，请重试'; 
      echo json_encode($arr); 
    } 
  }else{ 
    $arr['success'] = 0; 
    $arr['msg'] = '已经投票过了'; 
    echo json_encode($arr); 
  } 
} 

 
function jsons($id){ 
  $query = mysql_query("select * from votes where id=".$id); 
  $row = mysql_fetch_array($query); 
  $red = $row['likes']; 
  $blue = $row['unlikes']; 
  $arr['success']=1; 
  $arr['red'] = $red; 
  $arr['blue'] = $blue; 
  $red_percent = round($red/($red+$blue),3); 
  $arr['red_percent'] = $red_percent; 
  $arr['blue_percent'] = 1-$red_percent; 
   
  return json_encode($arr); 
} 

CREATE TABLE IF NOT EXISTS `votes` ( 
 `id` int(10) NOT NULL AUTO_INCREMENT, 
 `likes` int(10) NOT NULL DEFAULT '0', 
 `unlikes` int(10) NOT NULL DEFAULT '0', 
 PRIMARY KEY (`id`) 
) ENGINE=MyISAM DEFAULT CHARSET=utf8; 
 
 
INSERT INTO `votes` (`id`, `likes`, `unlikes`) VALUES 
(1, 30, 10); 
 
CREATE TABLE IF NOT EXISTS `votes_ip` ( 
 `id` int(10) NOT NULL, 
 `vid` int(10) NOT NULL, 
 `ip` varchar(40) NOT NULL 
) ENGINE=MyISAM DEFAULT CHARSET=utf8;