All the JavaScript you need to know before starting with React

Samer Buna
Jan 6, 2019 · 19 min read

React developers love the modern features in JavaScript and use them extensively in their projects. In this guide, I’ll go over the most popular features that are usually used with React. Most of these features are modern to JavaScript but I’ll also talk about some older ones that are related and important for React.

This will NOT be a complete list of everything offered by the JavaScript language but rather the subset that I think will help you write better code for React.

Block scopes and the…