#Javascript
10 articles tagged "javascript".
How to Migrate a JavaScript Codebase to TypeScript Incrementally
A step-by-step approach to adopting TypeScript in an existing JavaScript project without a risky big-bang rewrite.
Modern Array Methods You Should Be Using Instead of Loops
map, filter, reduce, find, some, and every cover the vast majority of loop use cases — and read more clearly once you know the patterns.
React State Management: useState, useReducer, and When You Actually Need a Library
Most React apps reach for a state management library long before they need one. Here's what useState and useReducer actually cover, and the honest signal for when it's time to add something more.
JavaScript Closures Explained: What They Actually Are and Why They Matter
A closure isn't a special syntax feature — it's just a function that remembers the variables from where it was created. Here's what that actually means in practice, with the bugs it causes and the patterns it enables.
TypeScript Generics Explained: A Practical Introduction
Generics look intimidating in library type definitions but the core idea is simple — a type that takes a type as a parameter. Here's how to actually use and read them.
The JavaScript Event Loop, Explained With Diagrams
How the call stack, task queue, and microtask queue actually interact — and why your setTimeout(fn, 0) doesn't run immediately.
React useEffect Cleanup: A Practical Guide
When and why to return a cleanup function from useEffect, with real examples of the bugs it prevents — subscriptions, timers, and stale event listeners.
React Server Components Explained: What They Are and When to Use Them
A practical, no-hype breakdown of React Server Components — what problem they solve, how they differ from Client Components, and when you actually need them.
Regular Expressions Explained: A Practical Guide for Developers Who Avoid Them
Regex doesn't need to be memorized wholesale — a practical reference covering the patterns you'll actually use, with real examples instead of abstract syntax diagrams.
TypeScript Utility Types Cheat Sheet
Partial, Pick, Omit, Record, and the other built-in utility types explained with practical, real-world examples instead of abstract definitions.
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