Detailed explanation of PHP Ajax implementation of non-refresh paging examples (with demo source code download), ajaxdemo

Detailed explanation of PHP Ajax implementation of non-refresh paging examples (with demo source code download), ajaxdemo_PHP tutorial

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jul 12, 2016 am 08:54 AM

ajaxphpselect all

Detailed explanation of PHP Ajax implementation of non-refresh paging examples (with demo source code download), ajaxdemo

This article describes the method of PHP Ajax implementation of non-refresh paging. Share it with everyone for your reference, the details are as follows:

Note: The source codes of some of the class libraries used here can be found in previous articles, so in order to shorten the length of the article, the links are indicated.

This article explains: Ajax implementation of refresh-free paging, implementation principles, code display, and code download.

Some knowledge needs to be explained here:

1. The benefits of Ajax without refreshing the page: Provide a good customer experience, obtain data from the database in the background through Ajax and display it, eliminating the blank state that appears while waiting for the page to be loaded;

2. So, the Ajax non-refresh page runs on a dynamic page (.php)? Or a static page (.html/.htm/.shtml)? The answer is: static page;

3. Implementation principle: The data returned from the dynamic page is obtained and displayed through the combination of front-end JS script program and Ajax.

Okay, let’s explain the code below:

Since it is running on a static page, we first create a static HTML page. The code list of index.html is as follows.

index.html

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="js/ajax.js"></script> <!-- 载入 Ajax 类库 -->
<title>Ajax 实现无刷新页面</title>
<style type="text/css">
  body {
    font-size:12px;
  }
</style>
</head>
<body>
  <div id="fpage">数据加载中...</div>
</body>
</html>

In the code list, we have loaded an Ajax class library. This class library can be found in the previous article "Analysis of a Simple Ajax Class Library and Usage Examples"

In this static page, only "Data loading...." will be displayed, and there will be no data. At this time, we need a JS script to obtain data from the database through Ajax. The JS script is as follows:

<script type="text/javascript">
  /**
  * setPage(url) 根据 url 从 article.php 中获取数据
  * @param int pageNum 页码
  * @return string
  */
  var cache=new Array(); // 缓存变量，当数据被访问过之后放置在缓存中，加快访问速度
  function setPage(pageNum) {
    var fpage = document.getElementById('fpage'); // 获取 fpage 对象
    // 如果缓存中存在数据，那么直接从缓存中读取；如果不存在数据，那么就从数据库中读取，并把数据存入缓存
    if (typeof(cache[pageNum])=='undefined') {
      var ajax = Ajax();
      ajax.get('article.php&#63;page='+pageNum, function(data){
        fpage.innerHTML = data; // fpage对象的内容是从 article.php 中取来的
        cache[pageNum] = data;
      })
    } else {
      fpage.innerHTML = cache[pageNum];
    }
  }
  setPage(1); // 默认执行
</script>

Read the above code carefully and you will find the following phenomenon:

1. setPage(pageNum) is a JS function interface for extracting data from the database;
2. Ajax obtains data through the article.php file;
3. article.php?page=xx, where xx is the page number data to be obtained,
setPage(1): Gets the data on page 1;
setPage(2): Gets the data on page 2;
setPage(100): Gets the data on page 100;
…

So, how to get data from the article.php file? Please see the code listing below.

article.php

<&#63;php
/**
* $Id: article.php
* author Lee.
* Last modify $Date: 2012-01-21 16:53:05 $
*/
require_once './config.inc.php';
$m = new Model();
$page = new ajaxPage($m->total('article'),20); // $m->total('article') 获取 article 表的记录数；10为每页显示十条
$result = $m->fetchAll('article', '*', '', '', $page->limit); // 取出数据，^_^，很方便吧
echo '<table align="center" border="1" width="1100" style="border-collapse:collapse;font-size:14px;" bordercolor="#666">';
echo '<caption><h1 id="华强电子网资讯">华强电子网资讯</h1></caption>';
echo '<tr height="25"><th>ID</th><th>Title</th><th>Author</th><th>Source</th><th>Date</th></tr>';
foreach ($result as $v) {
  echo "<tr height='21'><td align='center'>{$v['id']}</td><td>{$v['title']}</td><td align='center'>{$v['author']}</td><td align='center'>{$v['source']}</td><td align='center'>{$v['date']}</td></tr>";
}
echo '<tr><td align="right" colspan="5">'.$page->fpage().'</td></tr>';
echo '</table>';
&#63;>

The data connected in article.php is the information data captured from Huaqiang Electronics Network in the previous article. Because the data is relatively large, the article.sql file will be attached to the code package download for everyone to test.

The data displayed on the static page index.html is the echo code in the article.php file.
The config.inc.php file in the code file mainly defines some constants, such as: database user name, database password, host..., database connection class library (Db.class.php) and database operation class library (Model.class. php), please refer to the article "Analysis of Common PDO Class Library Examples of PHP", with usage instructions.

Program renderings:

The picture below marks the places to pay attention to

In this way, Ajax non-refresh paging is completed. There is also an ajaxPage.class.php in the program that is not explained. In fact, the usage of this ajaxPage class library is the same as that of the general paging class library.

That is: $page = new ajaxPage (total number of records, number displayed per page);

For specific details, please download the code and read it.

Click here to download the complete example code from this website.

Readers who are interested in more PHP-related content can check out the special topics on this site: "Summary of PHP ajax skills and applications", "Summary of PHP operations and operator usage", "Summary of PHP network programming skills", "PHP basic syntax" "Introductory Tutorial", "Summary of PHP Office Document Skills (Including Word, Excel, Access, PPT)", "Summary of PHP Date and Time Usage", "Introduction to PHP Object-Oriented Programming", "php String Usage" Summary", "Introduction Tutorial on PHP MySQL Database Operation" and "Summary of Common PHP Database Operation Skills"

I hope this article will be helpful to everyone in PHP programming.

Articles you may be interested in:

Detailed explanation of php ajax no-refresh paging example
php ajax implementation of no-refresh paging
Detailed explanation of PHP AJAX no-refresh paging Implementation method
php ajax method to realize non-refresh paging
ajax to realize non-refresh paging (php)
php ajax non-refresh paging, support id positioning
JQuery PHP publishes content without refresh paging (Fckeditor)
php jquery implements news tag classification and refresh-free paging
A brief analysis of PHP ajax paging examples
PHP jQuery Ajax To achieve the paging effect, the application of jPaginate plug-in
php page number form paging function supports static address and ajax paging

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

The Continued Use of PHP: Reasons for Its EnduranceApr 19, 2025 am 12:23 AM

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python: Exploring Their Similarities and DifferencesApr 19, 2025 am 12:21 AM

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP and Python: Different Paradigms ExplainedApr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP and Python: A Deep Dive into Their HistoryApr 18, 2025 am 12:25 AM

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

Choosing Between PHP and Python: A GuideApr 18, 2025 am 12:24 AM

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP and Frameworks: Modernizing the LanguageApr 18, 2025 am 12:14 AM

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHP's Impact: Web Development and BeyondApr 18, 2025 am 12:10 AM

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

How does PHP type hinting work, including scalar types, return types, union types, and nullable types?Apr 17, 2025 am 12:25 AM

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.

See all articles