Javascript Tutorials

Explore our Javascript tutorials and learn at your own pace

November 23, 2025

Building a Custom JavaScript Bundler from Scratch

Tools like Webpack, Rollup, and Vite are often treated as black boxes. We feed them modern JavaScript, Sass, and TypeScript, and they magically spit out optimis...

Efe Omoregie

October 23, 2025

Advanced Promises

Asynchronous programming is not just a feature; it is a necessity. From fetching data from an API to handling user events, asynchronous operations are everywher...

Efe Omoregie

October 1, 2025

JavaScript AST Manipulation for Fun and Profit

For many JavaScript developers, the code they write is the final product. But what if you could write code that understands and even rewrites other code? This i...

Efe Omoregie

September 29, 2025

Crafting a Custom JavaScript ESLint Rule

ESLint has become an indispensable tool for maintaining code quality and consistency in modern JavaScript projects. While it comes with a vast collection of bui...

Efe Omoregie

September 20, 2025

Mastering JavaScript Promises

Asynchronous operations are the backbone of modern web development, enabling non-blocking code execution that keeps user interfaces responsive and applications ...

Efe Omoregie

September 19, 2025

Mastering JavaScript Event Delegation

Event delegation is a powerful and elegant pattern in JavaScript for handling DOM events efficiently. It leverages the concept of event bubbling to manage event...

Efe Omoregie

September 16, 2025

JavaScript Memory Management and Garbage Collection

Understanding how JavaScript handles memory is a crucial skill for any developer looking to write performant, robust, and scalable applications. While JavaScrip...

Efe Omoregie

September 10, 2025

Advanced JavaScript Engine Internals

JavaScript is more than just a language for web browsers; it's a powerful, versatile language that runs on servers, desktops, and even IoT devices. But how does...

Efe Omoregie

August 13, 2025

Static Type Safety in JavaScript with TypeScript Advanced Mapped Types

TypeScript’s advanced mapped types turn JavaScript into a statically‑typed language that can still evolve with dynamic data shapes. In this post, I’ll cover map...

Efe Omoregie

August 11, 2025

Building Scalable JavaScript Applications with Micro-Frontends

Modern web applications are growing in complexity, often evolving into large, monolithic front-end codebases that can be challenging to maintain, scale, and dev...

Efe Omoregie

August 7, 2025

Deep Dive into JavaScript Event Loop

JavaScript's single-threaded nature often leads to misconceptions about how it handles asynchronous operations. The Event Loop is the unsung hero behind this ma...

Efe Omoregie

August 4, 2025

Advanced JavaScript Decorators and Metaprogramming

JavaScript is a language of constant evolution, and with that evolution comes powerful features that allow developers to write more concise, readable, and maint...

Efe Omoregie