Web scraping with JavaScript involves three distinct problems: getting the HTML, parsing it, and avoiding blocks at scale — and most tutorials only address the first in depth. This guide covers the full JavaScript web scraping stack, starting with Requests and BeautifulSoup equivalents in Node.js, then scaling up to Playwright for dynamic pages, and using ScrapingBee for harder targets with anti-bot protections. It aims to be the practical lesson that prevents scrapers from working in dev but failing in production weeks later.