Learning PHP 7 (Video 30)

The video tutorial guides viewers through creating a new database table for comments, setting up routes and controllers, implementing form validation, modifying templates, and integrating JavaScript for asynchronous comment handling. It covers the entire process from database schema creation to front-end integration, enhancing a social application with a comment feature.

Describe the functionality of the modal window mentioned in the text.

What JavaScript functions are mentioned for handling comments, and what do they do?