jquery 滚动条加载数据

无刷新动态加载数据，滚动条加载

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

演示

 

 

PHP Code

<div id="container">
<?php
$query=mysql_query("select * from content order by id desc limit 0,10");
while ($row=mysql_fetch_array($query)) {
?>
<div class="single_item">
<div class="element_head">
<div class="date"><?php echodate('m-d H:i',strtotime($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>

js文件

 

JavaScript Code

1. <script type="text/javascript">
2. $(function(){
3. var winH = $(window).height(); //页面可视区域高度
4. var i = 1;
5. $(window).scroll(function () {
6. var pageH = $(document.body).height();
7. var scrollT = $(window).scrollTop(); //滚动条top
8. var aa = (pageH-winH-scrollT)/winH;
9. if(aa<0.02){
10. $.getJSON("result.php",{page:i},function(json){
11. if(json){
12. var str = "";
13. $.each(json,function(index,array){
14. var str = "<div class=\"single_item\"><div class=\"element_head\">";
15. var str = str + "<div class=\"date\">"+array['date']+"</div>";
16. var str = str + "<div class=\"author\">"+array['author']+"</div>";
17. var str = str + "</div><div class=\"content\">"+array['content']+"</div></div>";
18. $("#container").append(str);
19. });
20. i++;
21. }else{
22. $(".nodata").show().html("别滚动了，已经到底了。。。");
23. returnfalse;
24. }
25. });
26. }
27. });
28. });
29. </script>

result.php

PHP Code

<?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
?>

原文地址:http://www.freejs.net/article_jquerywenzi_52.html