mysql的表显示滚屏_PHP+jQuery实现滚屏无刷新动态加载数据功能详解-优快云博客

本文链接：https://blog.youkuaiyun.com/weixin_39637589/article/details/114892841

本文实例讲述了PHP+jQuery实现滚屏无刷新动态加载数据功能。分享给大家供大家参考，具体如下：

index.php

require_once('connect.php'); //连接数据库

$user = array('demo1','demo2','demo3','demo3','mo4'); //模拟了几个用户

滚屏加载--无刷新动态加载数据技术的应用

#container{margin:10px auto;width: 660px; border: 1px solid #999;}

.single_item{padding: 20px; border-bottom: 1px dotted #d3d3d3;}

.author{position: absolute; left: 0px; font-weight:bold; color:#39f}

.date{position: absolute; right: 0px; color:#999}

.content{line-height:20px; word-break: break-all;}

.element_head{width: 100%; position: relative; height: 20px;}

.nodata{display:none; height:32px; line-height:32px; text-align:center; color:#999; font-size:14px}

//需要引入jquery

提示：使用滚动或拉动滚动条向下看。

$query=mysqli_query($link, "select * from say order by id desc limit 0,15");

while ($row=mysqli_fetch_array($query, MYSQLI_ASSOC)) {

$(function(){

var winH = $(window).height(); //页面可视区域高度

var i = 1;//设置当前页数

$(window).scroll(function () {

var pageH = $(document.body).height();

var scrollT = $(window).scrollTop(); //滚动条top

var aa = (pageH-winH-scrollT)/winH;

if(aa<0.02){

$.getJSON("result.php",{page:i},function(json){

if(json){

var str = "";

$.each(json,function(index,array){

var str = "

var str = str + "

"+array['date']+"

var str = str + "

"+array['author']+"

var str = str + "

"+array['content']+"

$("#container").append(str);

});

i++;

}else{

$(".nodata").show().html("别滚动了，已经到底了。。。");

return false;

}

});

}

});

ajax_demo.sql

-- phpMyAdmin SQL Dump

-- version 3.5.2.2

-- http://www.phpmyadmin.net

-- 主机: localhost

-- 生成日期: 2015 年 01 月 18 日 15:56

-- 服务器版本: 5.1.46-community

-- PHP 版本: 5.2.13

SET SQL_MODE="NO_AUTO_VALUE_ON_ZERO";

SET time_zone = "+00:00";

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;

/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;

/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;

/*!40101 SET NAMES utf8 */;

-- 数据库: `demo`

-- --------------------------------------------------------

-- 表的结构 `say`

CREATE TABLE IF NOT EXISTS `say` (

`id` int(11) NOT NULL AUTO_INCREMENT,

`userid` int(11) NOT NULL DEFAULT '0',

`content` varchar(200) NOT NULL,

`addtime` int(10) NOT NULL,

PRIMARY KEY (`id`)

) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=63 ;

-- 转存表中的数据 `say`

INSERT INTO `say` (`id`, `userid`, `content`, `addtime`) VALUES

(1, 0, '爱爱爱', 1421332482),

(2, 1, '爱爱爱', 1421332482),

(3, 0, '爱爱爱', 1421332482),

(4, 1, '爱爱爱', 1421332482),

(5, 0, '爱爱爱', 1421332482),

(6, 0, '爱爱爱', 1421332482),

(7, 0, '爱爱爱', 1421332482),

(8, 2, '爱爱爱', 1421332482),

(9, 0, '爱爱爱', 1421332482),

(10, 0, '爱爱爱', 1421332482),

(11, 0, '爱爱爱', 1421332482),

(12, 0, '爱爱爱', 1421332482),

(13, 0, '爱爱爱', 1421332482),

(14, 0, '爱爱爱', 1421332482),

(15, 0, '爱爱爱', 1421332482),

(16, 0, '爱爱爱', 1421332482),

(17, 0, '爱爱爱', 1421332482),

(18, 0, '爱爱爱', 1421332482),

(19, 0, '爱爱爱', 1421332482),

(20, 0, '爱爱爱', 1421332482),

(21, 0, '爱爱爱', 1421332482),

(22, 0, '爱爱爱', 1421332482),

(23, 0, '爱爱爱', 1421332482),

(24, 0, '爱爱爱', 1421332482),

(25, 0, '爱爱爱', 1421332482),

(26, 0, '2222', 1421333156),

(27, 0, '2222', 1421333159),

(28, 0, '2222', 1421333161),

(29, 0, '2222', 1421333162),

(30, 0, '2222', 1421333164),

(31, 0, '2222', 1421333165),

(32, 0, '2222', 1421333167),

(33, 0, '2222', 1421333168),

(34, 0, '2222', 1421333169),

(35, 0, '2222', 1421333170),

(36, 0, '2222', 1421333172),

(37, 0, '2222', 1421333173),

(38, 0, '2222', 1421333175),

(39, 0, '2222', 1421333176),

(40, 0, '2222', 1421333177),

(41, 0, '2222', 1421333178),

(42, 0, '2222', 1421333179),

(43, 0, '2222', 1421333181),

(44, 0, '2222', 1421333182),

(45, 0, '2222', 1421333183),

(46, 0, '2222', 1421333184),

(47, 0, '2222', 1421333293),

(48, 0, '2222', 1421333295),

(49, 0, '2222', 1421333296),

(50, 0, '2222', 1421333297),

(51, 0, '2222', 1421333298),

(52, 0, '2222', 1421333299),

(53, 0, '2222', 1421333300),

(54, 0, '2222', 1421333302),

(55, 0, '2222', 1421333303),

(56, 0, '2222', 1421333304),

(57, 0, '2222', 1421333305),

(58, 0, '2222', 1421333306),

(59, 0, '2222', 1421333308),

(60, 0, '2222', 1421333309),

(61, 0, '2222', 1421333310),

(62, 0, '2222', 1421333311);

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;

/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;

/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

result.php 接收请求页面

require_once('connect.php'); //连接数据库

$user = array('demo1','demo2','demo3','demo3','demo4');

$page = intval($_GET['page']); //获取请求的页数

$start = $page*15;

$query=mysqli_query($link, "select * from say order by id desc limit $start,15");

/* while ($row=mysqli_fetch_array($query)) {

$arr[] = array(

'content'=>$row['content'],

'author'=>$user[$row['userid']],

'date'=>date('m-d H:i',$row['addtime'])

);

} */

if($query){

while ($row=mysqli_fetch_array($query)) {

$arr[] = array(

'content'=>$row['content'],

'author'=>$user[$row['userid']],

'date'=>date('m-d H:i',$row['addtime'])

);

}

if(!empty($arr)){

echo json_encode($arr); //转换为json数据输出

}

//echo json_encode($arr); //转换为json数据输出

connect.php 数据库配置文件

$host="localhost";

$db_user="root";

$db_pass="admin";

$db_name="ajax_demo";

$timezone="Asia/Shanghai";

$link=mysqli_connect($host,$db_user,$db_pass);

mysqli_select_db($link, $db_name);

mysqli_query($link, "SET names UTF8");

header("Content-Type: text/html; charset=utf-8");

希望本文所述对大家PHP程序设计有所帮助。