What is Reactivity?

This article is intended for newcomers to HTML and JavaScript programming. However, it's suggested that you read this article explaining what the DOM is first.

As an experienced frontend engineer, I'm often asked:

"Why would you want to use a modern frontend framework like React, Angular, or Vue?"

While I have a whole (free) book on the topic, my short answer is typically "Reactivity". The follow-up response I usually get from this is:

"What is reactivity?"

In short, Reactivity …

angular article beginners book dom engineer framework free frontend html javascript modern programming react vue webdev