How To
Visual Diff Screenshots for Playwright: 5 Tips (2025)
Flaky CI hides UI bugs behind logs. Capture visual diff screenshots with Playwright to see what broke, reduce…
// tag archive
javascript
14 articles
JavaScript
JavaScript Algorithm Interview Guide: Step‑by‑Step
Ace JavaScript algorithm interview challenges with a systems‑engineer’s guide—pick the right pattern, write V8‑optimized code, and benchmark using…
JavaScript
Ace Top 10 JavaScript Interview Questions for Junior Devs
Boost your interview confidence with the top 10 JavaScript interview questions every junior developer should master—code examples and…
JavaScript
JavaScript Interview Questions: Memory, Async & Performance
Master JavaScript interview questions on execution context, async patterns, memory leaks, and performance tuning – boost confidence and…
Frontend
Dark Mode with React Context & CSS Variables (2024 Guide)
Implement a dark mode in React using Context state and CSS custom properties, persisting the choice via localStorage…
Frontend
Frontend Monitoring with Sentry & LogRocket: 2024 Guide
Learn how to pair Sentry’s error intelligence with LogRocket’s session replay for complete frontend monitoring, cutting debugging time…
JavaScript
JavaScript Basics Every Developer Must Know (2026 Guide)
Master JavaScript basics to write cleaner code and prevent costly bugs. Learn syntax, data types, async patterns, the…
Backend Dev
Data Mapper vs Active Record in JavaScript ORMs (2026 Guide)
Learn when to choose Data Mapper or Active Record for your JavaScript ORM. Get code examples and key…
Frontend
WebSockets vs SSE: Real‑Time Frontend Guide (2026)
Learn how to replace inefficient polling with WebSockets and Server‑Sent Events in modern frontend apps, boosting latency, scalability,…
AI
Deploy AI Agent with Flask & JavaScript (2024)
Learn how to build a scalable, user‑friendly AI chatbot using Flask, Celery, Redis, and a JavaScript front‑end with…
AI
No-Code AI Agent with Node.js & Express: Step‑by‑Step Guide
Learn how to build a no-code AI agent using Node.js and Express, letting non‑engineers design workflows with a…
cover
Tutorials
How to Run the Claude API in Node.js (2026 Step-by-Step Guide)
A complete, beginner-friendly guide to calling the Claude API from Node.js — SDK setup, your first request, streaming,…
Backend Dev
Sprite Sheets in Node.js: How Video Platforms Show Fast Hover Previews Without Loading Hundreds of Images
Modern users don’t think in milliseconds — they think in feel. If a UI feels slow, it’s broken.…
JavaScript
238 : Product of Array Except Self
Problem Restated (Very Simply) You are given an array: For each index, you need to calculate: Product of…