📰 Dev.to · 楊東霖

Understand JavaScript closures once and for all. Learn what closures are, how scope works, and see practical use cases including counters, memoization, and priv

Master every JavaScript array method with practical examples. Learn map, filter, reduce, find, forEach, flat, and more — with real-world use cases and performan

Learn how to validate YAML in JavaScript using js-yaml and yaml packages, handle schema validation, catch common errors, and parse YAML safely.

Learn how to convert timestamps in JavaScript — Unix to ISO 8601, timezone handling, Date.now(), and when to use date-fns vs dayjs. Includes a full cheat sheet.

Learn how to automate code review with AI tools in 2026. Set up automated PR reviews, integrate AI code analysis into CI/CD, and catch bugs before they reach pr

A real walkthrough of building and launching a side project in one day using AI coding tools. Covers the full stack: idea to deployment, with the exact AI promp

Learn Docker from scratch. Understand containers vs VMs, master essential commands, write your first Dockerfile, and use docker-compose to run multi-container a

Master CSS Grid with this complete tutorial. Learn grid containers, tracks, areas, alignment, auto-placement, and real-world layout patterns including responsiv

Master CSS Flexbox with this complete guide. Learn flex container properties, flex item properties, alignment, spacing, and real-world layout patterns with visu

Everything you need to know about JSON formatting, validation, common errors, and best practices for

A practical guide to Base64 encoding — what it is, how it works, when to use it, and common pitfalls

The 20 best VS Code extensions for JavaScript developers in 2026. Covers linting, formatting, debugging, AI assistance, productivity, and React/Node.js developm

Compare the best Git GUI clients in 2025—GitKraken, SourceTree, Fork, GitHub Desktop, Tower, SmartGit, and Sublime Merge. Features, pricing, and platform suppor

The complete guide to Python developer tools in 2026. Best Python IDEs, linters, formatters, testing frameworks, virtual environment managers, and productivity

A practical Git commands reference for 2026 — from daily workflow basics to branching strategies, rebasing, stashing, and fixing mistakes. With real examples.

Complete Docker beginner guide: understand containers vs VMs, install Docker, write Dockerfiles, use Docker Compose for multi-container apps. With hands-on exam

Learn how to build an AI agent from scratch. This step-by-step tutorial covers tool use, memory, planning, and deployment using Claude, GPT-4, and open-source m

TypeScript or JavaScript? Compare type safety, developer experience, tooling, performance, learning curve, and migration strategies to decide if TypeScript is r

Compare Tailwind CSS and Bootstrap for web development. Analyze bundle size, customization, learning curve, component libraries, and real-world project suitabil

Compare PostgreSQL and MySQL for your next project. Analyze performance, JSON support, full-text search, replication, cloud hosting, and when to choose each dat

Master SQL formatting best practices — learn indentation rules, naming conventions, keyword casing, subquery alignment, and use the best free SQL formatter tool

Learn how to minify JavaScript without webpack, Vite, or any build system. Techniques for quick minification when you don't need a full toolchain.

Learn why CSS minification improves web performance, how minifiers work under the hood, and the best tools and techniques for minifying CSS in 2026.

Master CSS colors with this complete guide to HEX, RGB, and HSL formats — learn color theory, conversion formulas, and use free online color picker tools.