Technology Cheat Sheets

JavaScript Array Methods Cheat Sheet

A simple JavaScript array methods cheat sheet. Learn map(), filter(), reduce(), sort(), and more with easy code examples for beginners and reference for experienced devs.

JavaScript Arrow Functions Cheat Sheet

A beginner-friendly guide to JavaScript arrow functions. Learn syntax, implicit returns, lexical this, and best practices with clear examples.

JavaScript Closures Cheat Sheet

A beginner-friendly guide to JavaScript closures. Learn how closures work, why they’re useful, and practical examples with easy-to-understand code.

JavaScript Date and Time Cheat Sheet

A beginner-friendly guide to JavaScript date and time. Learn how to create, format, and manipulate dates, work with timestamps, and perform common date calculations.

JavaScript Debugging One-Liners Cheat Sheet

Quick and handy JavaScript debugging one-liners for logging, tracing, timing, error handling, and inspecting objects and variables.

JavaScript DOM Manipulation Cheat Sheet

A quick reference to selecting, editing, creating, and styling DOM elements with vanilla JavaScript. Learn to update content, attributes, and handle events easily.

Next.js Directives Cheat Sheet

A concise cheat sheet on Next.js directives, covering server directives, client-side execution, dynamic behaviors, and best practices for efficient rendering.

Next.js Environment Variables & Configuration Cheat Sheet

A concise cheat sheet on using environment variables and configuration in Next.js, covering .env files, runtime config, public/private variables, and best practices.

Next.js Data Fetching Cheat Sheet

A practical cheat sheet on data fetching in Next.js, covering server-side fetching, client-side requests, static site generation (SSG), and incremental static regeneration (ISR).

Next.js Getting Started Cheat Sheet

A practical cheat sheet for getting started with Next.js, covering installation, project setup, routing, components, and best practices for efficient development.

Next.js Image Optimization Cheat Sheet

A practical cheat sheet on optimizing images in Next.js, covering the Next.js Image component, lazy loading, formats, and best practices for performance.

Next.js Compiler Cheat Sheet

A concise cheat sheet on the Next.js compiler, covering optimizations, Rust-based architecture, SWC transformations, and best practices for faster builds.

React useEffect Hook Cheat Sheet

A concise cheat sheet on the React useEffect hook, covering side effects, dependency arrays, cleanup functions, and best practices for efficient component lifecycle management.

React useContext Hook Cheat Sheet

A concise cheat sheet on the React useContext hook, covering context creation, provider usage, state management, and best practices for component-level data sharing.

React Event Handling Cheat Sheet

A concise cheat sheet on React event handling, covering synthetic events, event delegation, controlled components, and best practices for optimizing event-driven UI interactions.

React useState Hook Cheat Sheet

A concise cheat sheet on the React useState hook, covering state initialization, updates, functional state, and best practices for managing component state effectively.

React Hooks Cheat Sheet

A comprehensive cheat sheet on React hooks, covering core hooks like useState, useEffect, and useContext, along with advanced hooks for optimizing performance and state management.

React State Management Cheat Sheet

A concise cheat sheet on React state management, covering useState, useReducer, Context API, Redux, Zustand, and best practices for scalable applications.