无刷新动态加载数据 滚动条加载适合评论等页面

滚屏加载更多数据,适合评论等页面

本例的数据库很简单，一看就明了

代码如下:

<div id="container">

<?php

$query=mysql_query("select * from content order by id desc limit 0,10");

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

?>

<div class="single_item">

<div class="element_head">

<div class="date"><?php echo date('m-d H:i',strtotime($row['updatetime']));?></div>

<div class="author"><?php echo $row['id'];?></div>

</div>

<div class="content"><?php echo $row['message'];?></div>

</div>

<?php } ?>

</div>

<div class="nodata"></div>

//unity3d脚本 http://www.unitymanual.com
js文件

代码如下:

<script type="text/javascript">

$(function(){

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

var i = 1;

$(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 = "<div class=\"single_item\"><div class=\"element_head\">";

var str = str + "<div class=\"date\">"+array['date']+"</div>";

var str = str + "<div class=\"author\">"+array['author']+"</div>";

var str = str + "</div><div class=\"content\">"+array['content']+"</div></div>";

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

});

i++;

}else{

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

return false;

}

});

}

});

});

</script>

result.php

代码如下:

<?php

include("conn.php");

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

$start = $page*5;

$query=mysql_query("select * from content order by id desc limit $start,5");

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

$arr[] = array(

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

'author'=>$row['id'],

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

);

}

echo json_encode($arr); //转换为json数据输出

?>