Category: JavaScript

The ES2019 specification may have been a smaller addition to JavaScript, but it still brought some interesting features. This tutorial will show you eight ES2019 features that can make your life easier. These features include trimStart(), trimEnd(), flat(), flatMap(), Object.fromEntries() and more.

The ES2020 specification brought many interesting features. In this tutorial, you will learn about seven ES2020 features that attracted the most attention: BigInt, matchAll(), globalThis, dynamic import, Promise.allSettled(), optional chaining and nullish coalescing operator.

The ES2021 (ES12) will be released in the middle of 2021. In this tutorial, you will learn about the five most interesting features from this specification: String.prototype.replaceAll(), numeric separators, logical assignment operators, Promise.any(), WeakRef and Finalizers.

JavaScript classes are popular feature of JavaScript. This tutorial will help you learn what you should know so you can get started with JavaScript classes. You will learn about class constructor, properties and methods. You will also learn what public, static and private class fields are.

undefined and null are two data types in JavaScript that can sometimes be confusing. This tutorial will help you learn about them. It will explain what undefined and null in JavaScript are. You will also learn what are some differences between these two and how to work with them.

Objects are one area every JavaScript developer must know very well. Accessing object properties belongs to this area as well. In this tutorial, you will learn how to access object properties in three ways. You will learn how to use dot notation, bracket notation and destructuring.