You might have seen the posts, images, videos loading automatically when you scroll down on your Facebook page or Twitter Page.
In WordPress, the AJAX plays a popular role in fetching the content dynamically on the blog post or pages without the need to refresh the page. It is also used to submit data or fetch data dynamically on page/post without reloading it.
Yes, WordPress has the AJAX support built into it and hence you don’t need to integrate it explicitly. AJAX can be used for front-end and back-end functionality – front-end for updating the content dynamically on the web page and back-end for fetching or processing data on the database (for example, MySQL).
How to use AJAX in WordPress (for developers)?
- Based on this Action, admin-ajax.php creates two hooks:
- Add jQuery to submit the request
- Define functions using the server side scripting language (PHP in case of WordPress) to fetch data from the database or to add/update/delete data from the MySQL database.
In general, AJAX can be used on WordPress to:
- Submit form data without reloading the page.
- Approve/Delete comments on a page without reloading the page.
- Change the features of a Theme or Plugin without reloading the page.
- Allow user actions like ‘Save Changes’ or do a ‘Vote’ without reloading the page.