Useful ES6 and React Features

Get familiar with key ES6 and React features that are used in building dynamic applications.

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JavaScript and React are evolving languages and technologies, incorporating exciting new features each year. ES6, also known as ECMAScript 2015, is a significant enhancement in the JavaScript language that allows developers to write programs for complex applications with better techniques and patterns.

With React, we’ve moved from writing classes to writing components using functions and React Hooks. In this lesson, we will quickly explore the ES6 syntaxes, React concepts, and React Hooks.

const and let

The const keyword was introduced in ES6. It makes any variables immutable when declared with the keyword. When using the const keyword, variables can’t be redeclared nor reassigned. Here’s an example of its usage:

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