Does WordPress require jQuery?

Yes and no, but mostly yes. WordPress does require jQuery, which is a JavaScript library that simplifies common JavaScript tasks. WordPress includes jQuery by default in the core code, and many plugins and themes also use it. If you’re developing a plugin or theme for WordPress, you can be pretty sure that jQuery is already available and you can use it in your code.

However, there are some cases where you may need to load a specific version of jQuery, or choose not to use it at all. In these cases, you can enqueue a custom version of jQuery or dequeue the default version provided by WordPress. This can be done by adding some code to your theme’s functions.php file or in a plugin. It’s important to understand the implications of modifying the default jQuery implementation in WordPress and to test your code thoroughly before deploying it to a live site.