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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

In JavaScript, <code>this</code> keyword refers to:

JavaScript classes are basically objects. Is this statement True or False?

JavaScript classes are basically objects. Is this statement True or False?

ES6 does not support *overriding*. Is this statement True or False?

ES6 does not support overriding. Is this statement True or False?

Explicit binding occurs when dot notation is used to invoke a function. Is this statement True or False?

Explicit binding occurs when dot notation is used to invoke a function. Is this statement True or False?

When we use `call()` on a fuction, the type of binding that occurs is:

When we use <code>call()</code> on a fuction, the type of binding that occurs is:

Test your knowledge of JavaScript Classes with this short quiz!

Getting Started

Variables, Operators & Expressions

Functions

Classes

Modules

React

Appendix

Conclusion

Quick Quiz on JavaScript Classes!