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After teaching React extensively (33.000+ students), be it online for a larger audience or on-site for companies transitioning to web development and React, I always come to the conclusion that React is all about JavaScript. Most of it boils down to JavaScript ES6 and beyond features and syntax, but also ternary operators, shorthand versions in the language, the 'this' object, JavaScript built-in functions (map, reduce, filter) or more general concepts such as composability, reusability, immutability or higher-order functions. While you don’t need necessarily to master all of these before starting with React, they will come up while practicing it and so to learn them will put you at a great advantage. 

This course is my attempt to give you comprehensive JavaScript skills that will make your React journey smooth and straight-forward.

JavaScript Fundamentals Before Learning React

Higher-order functions are a great programming concept, especially when moving towards functional programming. In React, it makes total sense to know about these kinds of functions, because at some point you have to deal with higher-order components which can be explained best when knowing about higher-order functions in the first place.

Higher-order functions can be showcased in React early on without introducing higher-order components. For instance, let’s say a rendered list of users can be filtered based on the value of an input field.


This lesson introduces the key concept of functional programming: High-Order functions, along with their application in React with the help of coding examples.

Getting Started

Variables, Operators & Expressions

Functions

Classes

Modules

React

Appendix

Conclusion

Higher-Order Functions in React