JavaScript
JavaScript language features, frameworks, and libraries
ReactBEGINNERReact Components & JSX
React components cheat sheet covering JSX syntax, props, conditional rendering, lists, event handling, and composition patterns.
TypeScriptINTERMEDIATETypeScript
TypeScript cheat sheet covering types, interfaces, generics, utility types, type guards, and advanced type system features with examples.
ReactINTERMEDIATEReact Hooks
React Hooks cheat sheet with useState, useEffect, useRef, useContext, and custom hook patterns with practical code examples.
JavaScriptINTERMEDIATEAsync JavaScript
Async JavaScript cheat sheet covering Promises, async/await, error handling, Promise.all, race conditions, and concurrency patterns.
Node.jsINTERMEDIATENode.js Core Modules
Node.js core modules cheat sheet covering fs, http, path, crypto, streams, events, and process with practical code examples.
JavaScriptBEGINNERDOM Manipulation
DOM manipulation cheat sheet with selectors, event handling, element creation, traversal, and vanilla JavaScript code examples.
Node.jsINTERMEDIATEExpress.js
Express.js cheat sheet with routing, middleware, request handling, error handling, and REST API patterns with Node.js code examples.
Alpine.jsBEGINNERAlpine.js
Alpine.js cheat sheet with directives, x-data, x-bind, x-on, transitions, and code examples for building lightweight interactive UIs.
ReactADVANCEDReact Custom Hooks
React custom hooks cheat sheet with patterns for state management, data fetching, debounce, and reusable logic with code examples.
Node.jsINTERMEDIATEExpress.js REST API
Express REST API cheat sheet covering routing, middleware, database integration, authentication, error handling, and testing patterns.
JavaScriptINTERMEDIATEJavaScript Regular Expressions
JavaScript regex cheat sheet with pattern syntax, flags, lookaheads, capture groups, common patterns, and practical code examples.
NPMINTERMEDIATENPM Package Manager
NPM cheat sheet covering package.json config, dependency management, scripts, publishing, workspaces, and CLI command reference.
JestINTERMEDIATEJest
Jest cheat sheet with matchers, mock functions, async testing, snapshot tests, and TypeScript testing patterns with code examples.
BunINTERMEDIATEBun
Complete reference for Bun — the all-in-one JavaScript/TypeScript runtime, package manager, bundler, and test runner
SolidJSINTERMEDIATESolidJS
A comprehensive cheat sheet for SolidJS, the reactive JavaScript framework with fine-grained reactivity, signals, stores, and control flow components.
ZodINTERMEDIATEZod
Complete reference for Zod — the TypeScript-first schema validation library with static type inference