首先我们在页面上放置“顶”和“踩”的按钮,即#dig_up和#dig_down,按钮上分别记录了投票的票数以及所占的百分比。
- <div class="digg">
- <div id="dig_up" class="digup">
- <span id="num_up"></span>
- <p>很好,很强大!</p>
- <div id="bar_up" class="bar"><span></span><i></i></div>
- </div>
- <div id="dig_down" class="digdown">
- <span id="num_down"></span>
- <p>太差劲了!</p>
- <div id="bar_down" class="bar"><span></span><i></i></div>
- </div>
- <div id="msg"></div>
- </div>
- $(function(){
- //当鼠标悬浮和离开两个按钮时,切换按钮背景样式
- $("#dig_up").hover(function(){
- $(this).addClass("digup_on");
- },function(){
- $(this).removeClass("digup_on");
- });
- $("#dig_down").hover(function(){
- $(this).addClass("digdown_on");
- },function(){
- $(this).removeClass("digdown_on");
- });
-
- //初始化数据
- getdata("ajax.php",1);
-
- //单击“顶”时
- $("#dig_up").click(function(){
- getdata("ajax.php?action=like",1);
- });
- //单击“踩”时
- $("#dig_down").click(function(){
- getdata("ajax.php?action=unlike",1);
- });
- });
函数getdata()
- function getdata(url,sid){
- $.getJSON(url,{id:sid},function(data){
- if(data.success==1){//投票成功
- $("#num_up").html(data.like);
- //通过控制宽度来显示百分比进度条效果
- $("#bar_up span").css("width",data.like_percent);
- $("#bar_up i").html(data.like_percent);
- $("#num_down").html(data.unlike);
- $("#bar_down span").css("width",data.unlike_percent);
- $("#bar_down i").html(data.unlike_percent);
- }else{//投票失败
- $("#msg").html(data.msg).show().css({'opacity':1,'top':'40px'})
- .animate({top:'-50px',opacity:0}, "slow");
- }
- });
- }
ajax.php
- $action = $_GET['action'];
- $id = 1;
- $ip = get_client_ip();//获取当前ip
-
- if ($action == 'like') {
- likes(1, $id, $ip);
- } elseif ($action == 'unlike') {
- likes(0, $id, $ip);
- } else {
- echo jsons($id);
- }
投票的表结构
- 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(11) NOT NULL AUTO_INCREMENT,
- `vid` int(11) NOT NULL,
- `ip` varchar(20) NOT NULL,
- PRIMARY KEY (`id`)
- ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=3 ;
本文转自:https://www.sucaihuo.com/php/105.html 转载请注明出处!