Are 'this' keyword still used in react.js now?

Question

I often see old video tutorial about 2 or 3 years ago, that often used 'this' keyword but new tutorial video like 1 years ago until now not so much used 'this' keyword or even doesn't used it at all. My equation is, are 'this' keyword stiil in used these day?

Note: and I don't know 'this' keyword are used for what in both javascript or react

Answer 1

The concept of "this" is not related to react.js but rather to JavaScript

My guess is that you encounter less and less "this" usage in react is due to the introduction of Hooks in version 16.8 of react.

Most new tutorials are focusing on hooks usage and functional components while the older tutorials were using class components which relied on the usage of "this".

I recommend reading about "this" in the following articles:

https://medium.com/byte-sized-react/what-is-this-in-react-25c62c31480

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/this

https://www.w3schools.com/js/js_this.asp

It's an important concept of JavaScript so I do suggest you to take the time to get familiar with it.