ajax php加载更多,基于ajax实现点击加载更多无刷新载入到本页

本文给大家介绍通过ajax技术实现无刷新加载更多载入到本页，感兴趣的朋友一起学习吧

先给大家展示效果图：

效果演示

本例是分页的另外一种显示方式,并不是隐藏未显示的内容

数据库结构与《ajax 翻页》是一样的

JavaScript 代码

$(document).ready(function() {

var track_click = ; //track user click on "load more" button, righ now it is click

var total_pages = <?php echo $total_pages; ?>;

$('#results').load("fetch_pages.php", {'page':track_click}, function() {track_click++;}); //initial data to load

$(".load_more").click(function (e) { //user clicks on button

$(this).hide(); //hide load more button on click

$('.animation_image').show(); //show loading image

if(track_click <= total_pages) //make sure user clicks are still less than total pages

{

//post page number and load returned data into result element

$.post('fetch_pages.php',{'page': track_click}, function(data) {

$(".load_more").show(); //bring back load more button

$("#results").append(data); //append data received from server

//scroll page to button element

$("html, body").animate({scrollTop: $("#load_more_button").offset().top}, );

//hide loading image

$('.animation_image').hide(); //hide loading image once data is received

track_click++; //user click increment on load button

}).fail(function(xhr, ajaxOptions, thrownError) {

alert(thrownError); //alert any HTTP error

$(".load_more").show(); //bring back load more button

$('.animation_image').hide(); //hide loading image once data is received

});

if(track_click >= total_pages-)

{

//reached end of the page yet? disable load button

$(".load_more").attr("disabled", "disabled");

}

}

});

});

XML/HTML代码

load More

Loading...

fetch_pages.php

php代码

include("conn.php");

$item_per_page = 3;

//sanitize post value

$page_number = filter_var($_POST["page"], FILTER_SANITIZE_NUMBER_INT, FILTER_FLAG_STRIP_HIGH);

//throw HTTP error if page number is not valid

if(!is_numeric($page_number)){

header('HTTP/1.1 500 Invalid page number!');

exit();

}

//get current starting point of records

$position = ($page_number * $item_per_page);

//Limit our results within a specified range.

$results = mysql_query("SELECT * FROM content ORDER BY id DESC LIMIT $position, $item_per_page");

//output results from database

echo '

• ';

while($row = mysql_fetch_array($results))

{

echo '

'.$row["id"].') '.$row["name"].''.$row["message"].'';

}

echo '

';

?>

上面是我整理给大家的，希望今后会对大家有帮助。

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