Creating a Load More Data Feature using PHP and Pure JavaScript Tutorial
Submitted by oretnom23 on Monday, March 20, 2023 - 13:21.
In this tutorial, you can learn how to create a Load More Feature without leaving the current page or refreshing the page using PHP, MySQL Database, and Pure JavaScript. The tutorial aims to provide students and beginners with a reference for learning to create a website feature that updates the HTML elements or manipulates DOM (Document Object Model) without redirecting to another page or reloading the current page. Here, I will be providing a simple web page that demonstrates the creation of a simple load of more data with a loader without refreshing the page.
What is the Load More Feature?
This tutorial refers to a Load More feature which is a simple component in a web site or web application for displaying the data. Like famous websites or social media sites are often use this kind of feature for displaying or loading data partially and optimizing the page load speed.
How to create a Load More Feature without Refreshing the Page?
The Load More Feature without Refreshing the Page can be acheived easily using Pure JavaScript. Using the JS Fetch API we can make an HTTP Request that retrieves the data from the database so we won't need to leave the current page. After the successful retrieval, we can use DOM Manipulation technique to update the page data or add the new queried data to the current page display. Check out the sample web page scripts that I created and provided below to have a better idea of how to do this.
Sample Web Page
The scritps below result in a simple web page that contains multiple posts or articles which are partially loaded. The data will be queried or retrieved from the database with the given length. The script loads the new data with 3 seconds delay to emphasize that the loader is just for demo purposes only. Then, when all data has been displayed, the load more button will be hidden and a simple text message will be shown that says "You have reached the last data".
Database Schema
The web page that I will be providing used the following dummy database and data. The database is known as sample_db and contains a single table named posts.
Database Connection
Next, here is the PHP file script named db-connect.php. It contains the PHP codes that handle the database connection between the web application and MySQL Database.
Page Interface
Next, here's the HTML file script named index.html. It contains the page layout, post container, loader, and button elements.
Stylesheet
Next, here is the CSS file script named style.css. It contains the custom styles that I created for some of the page interfaces and elements.
PHP API
Next, here is the PHP API named get_data.php. The file contains the PHP code that queries and retrieves the post data from the database. The query only limits to the maximum length given from the request and offsets the already rendered data.
JavaScript
Lastly, here is the JavaScript file script named script.js that contains the code for sending an HTTP Request for retrieving the data from the database and manipulating the current page DOM for displaying the newly retrieved data.
Snapshots
Here are the snapshots of the overall result of the scripts that I provided above.
Page Interface
Loading New Data
If reaches the last data
DEMO VIDEO
There you go! I hope this Creating a Load More Data Feature using PHP and Pure JavaScript Tutorial will help you with what you are looking for and will be useful for your current and future web application projects.
Explore more on this website for more Tutorials and JavaScripts.
Happy Coding =)
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