JavaScript in Plain English

JavaScript remains the language of the web. Explore tutorials on modern JavaScript, async programming, browser APIs, and patterns used in production codebases everywhere from tiny scripts to massive apps.

243 articles · Updated July 8, 2026

Learn how the event loop and async/await actually work — it's the concept that separates confident JS developers from the rest.

Related topics

Frontend React Vuejs Angular Svelte Nextjs CSS Front End Development JavaScript Ecosystem TypeScript Nodejs Npm

Featured articles

Hand-picked and latest articles from this topic.

Demystifying ‘This’ in JavaScript

Demystifying ‘This’ in JavaScript If you’ve even been confused by the word “this” in JavaScript, you’re not alone. I’ve struggled with it too, especially when it behaves differently in …

July 8, 2026

Demystifying ‘This’ in JavaScript

I Built a JavaScript Full Stack App With Zero Cloud Services — Here Is the Complete Architecture

Cloud is not mandatory — the self-hosted full stack architecture that eliminated every monthly subscription.

July 2, 2026

I Built a JavaScript Full Stack App With Zero Cloud Services — Here Is the Complete Architecture

10 JavaScript Mistakes I Keep Finding in Professional Codebases

They look harmless during development but become expensive once your application grows.

June 22, 2026

10 JavaScript Mistakes I Keep Finding in Professional Codebases

7 JavaScript Skills That Will Matter More in 2026 Than They Do Right Now

The language is shifting fast — these skills compound in value the longer you hold them.

May 13, 2026

7 JavaScript Skills That Will Matter More in 2026 Than They Do Right Now

How I Went From Copy-Pasting JavaScript to Actually Understanding It

Stop memorizing snippets — start thinking in systems, and turn JavaScript into a tool for real automation.

May 6, 2026

How I Went From Copy-Pasting JavaScript to Actually Understanding It

Getting started

Beginner-friendly guides to help you learn the fundamentals.

A Simple Introduction to JSON Web Tokens (JWTs) and Session-less Authentication

Go session-less and database-less in your next project with a simple introduction to token based authentication.

January 10, 2024

A Simple Introduction to JSON Web Tokens (JWTs) and Session-less Authentication

Types of Function in JavaScript

Mastering the Symphony of JavaScript Functions: A Comprehensive Guide from Basics to Advanced Concepts

January 1, 2024

Types of Function in JavaScript

A Beginner's Guide to OpenAI API in JavaScript

Getting Started with OpenAI and ChatGPT. Learn how to use OpenAI API in JavaScript to build AI-enabled apps. This guide covers installation, authentication, and code examples. Enhance your projects with OpenAI's language and deep learning models.

January 11, 2023

A Beginner's Guide to OpenAI API in JavaScript

Destructuring Function Parameters in JavaScript

An introduction to destructuring function parameters for beginners

April 22, 2022

Destructuring Function Parameters in JavaScript

Array Destructuring in JavaScript: A Comprehensive Beginner's Guide

June 10, 2021

Array Destructuring in JavaScript: A Comprehensive Beginner's Guide

From Explain

Plain-English explainers for core concepts related to this topic.

What is a JavaScript Engine?

JavaScript engines are the virtual machines inside browsers and runtimes like Node.js that parse, optimize, and execute your JavaScript code.

From Basics

Quick-reference cheatsheets for tools and libraries in this space.

JavaScript Cheatsheet

JavaScript is the language of the web. This cheatsheet covers modern ES6+ syntax, arrays, objects, and async patterns.

External resources

Curated tools, docs, and communities worth bookmarking.

Frequently asked questions

Quick answers about this topic hub.

Where should I start learning JavaScript?▾

Check the getting started articles below for foundational guides, then explore our Explain and Basics hubs for concept explainers and cheatsheets. Focus on the language fundamentals before jumping into frameworks.

What is the difference between JavaScript and TypeScript?▾

TypeScript is JavaScript with static types added. It compiles down to plain JavaScript but catches many bugs at build time and improves editor tooling. Learn JavaScript first, then adopt TypeScript as projects grow.

What are async/await and promises?▾

Promises represent a value that will be available later, and async/await is cleaner syntax for working with them. They're how modern JavaScript handles asynchronous work like network requests without deeply nested callbacks.

All articles

How to Rotate an Image with JavaScript

1. Rotate the image counter-clockwise, 2. Customize image transform origin, 3. Rotate image on button click, 4. Rotate image incrementally.

February 12, 2023

Be Careful of Passing an Async Function as a Parameter in JavaScript

February 12, 2023

How to add a key to an object in JavaScript

January 19, 2023

Gracefully Handling Parallel API Requests in JavaScript

January 18, 2023

Gracefully Handling Parallel API Requests in JavaScript

How to Download Files with JavaScript

Support for downloading files is a very common feature of web application. Over the past few years, I have developed this feature many times. In this article, we will learn how to download files…

January 16, 2023

How to Download Files with JavaScript

How to Remove Undefined Values from Objects in JavaScript

I’ve often found myself working with data that contains undefined values. These values can cause issues with data manipulation and can lead to unexpected behavior in your code. In this article, I’ll…

January 16, 2023

How to Remove Undefined Values from Objects in JavaScript

How to Get Today's Date in JavaScript

January 14, 2023

A Beginner's Guide to OpenAI API in JavaScript

Getting Started with OpenAI and ChatGPT. Learn how to use OpenAI API in JavaScript to build AI-enabled apps. This guide covers installation, authentication, and code examples. Enhance your projects with OpenAI's language and deep learning models.

January 11, 2023

A Beginner's Guide to OpenAI API in JavaScript

Create a Multi-Page Job Application Form Using Angular

A step-by-step tutorial to building a multi-page job application form using Angular and SurveyJS, a free, open-source JavaScript library.

January 4, 2023

Create a Multi-Page Job Application Form Using Angular

Check if string is Alphanumeric in JavaScript

In JavaScript, it is often necessary to check if a string is alphanumeric, which means it contains only letters and numbers and no other characters. This can be useful for validation purposes, such…

December 31, 2022

Check if string is Alphanumeric in JavaScript

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