Observer Pattern

The video tutorial explains the observer pattern, a design pattern that allows objects to subscribe and unsubscribe to events. It demonstrates how to implement this pattern using JavaScript prototypes and ES6 classes. The tutorial includes building a simple UI with buttons to subscribe and unsubscribe to events, and testing the functionality. The video concludes with a refactoring of the code to use ES6 classes, highlighting the syntactic sugar they provide over traditional prototypes.

Discuss the advantages of using the observer pattern in JavaScript applications.

What are some practical applications of the observer pattern in web development?

How can multiple functions be managed using the observer pattern?

What changes are made when converting the event observer to ES6 classes?