Handy JavaScript Snippets for Developers

Snippets are concise, reusable code solutions for daily development tasks in JavaScript, TypeScript, React, and Node.js.

Use this archive to quickly copy proven patterns, then adapt them to your project structure.

javascript

Identify If a Value Belongs to a Class in JavaScript
react

PasswordInput: Accessible Show/Hide Toggle
ai

The Ultimate Prompt to Make AI Write Like a Human
javascript

Callable & Newable Objects in JavaScript: Full Example
ai

GEMINI.md Example Snippet for Project Context
javascript

Resize and Optimize Images with Node.js Using Sharp
typescript

LRU (Least Recently Used) Algorithm – Overview and Implementation
react

Use the useTrackedEffect Hook to Debug React Component
javascript

Encapsulating a Comprehensive WebSocket Client in JavaScript
javascript

Memoization and Currying with Closures
javascript

Merge Two Sorted Arrays in JavaScript
javascript

Extract PDF images with JavaScript
typescript

TypeScript Debounce Function
nodejs

Get All Directories and Files Within Directory in NodeJs
javascript

JavaScript Binary Search Implementation