JavaScript: The Hard Parts, v2 vs The Web Developer Bootcamp 2024

Goes deep on the JavaScript runtime model — thread of execution, the call stack, closure, the event loop, Promises and prototypes/classes — across roughly 6.5 hours. Reviewers consistently say it explains how JavaScript works "under the hood" rather than just syntax.

Will Sentance (Codesmith founder) is the most-praised element. Learners cite his blackboard diagrams, the "backpack" analogy for closure, and a Socratic, audience-paced delivery. The same intense, repetitive style is the one thing a minority find tiring.

Requires a $39/month Frontend Masters subscription rather than a one-time purchase — strong value if you use the wider catalog, weaker if you only want this one course. The course is included in the standard subscription.

This is a conceptual, exercise-and-whiteboard course, not a project build. There is no portfolio-worthy capstone, which some learners miss. The exercises are effective for drilling mental models but produce no artefact.

The mental models — call stack, closure, the event loop, async behaviour — directly explain bugs developers hit daily. Experienced developers report the course clarified concepts they had used for years without fully understanding.

Broad full-stack scope (HTML, CSS, JS, DOM, Node, Express, MongoDB) that shows beginners the whole shape of a web app. One recurring 2024 critique flags Udemy paid courses for "low effort updates" vs MDN or Odin.

Strongest criterion. Long-time HN users name Colt their "favorite web dev teacher" and credit his in-person classroom background. Signature move is walking students directly into mistakes then guiding them out.

Listed near $200 but routinely buyable for $10-$20 in Udemy sales — a price every commenter we tracked considers a giveaway given the runtime and lifetime access. The standard advice is to clear cookies, use incognito, and never pay sticker.

The build-along YelpCamp full-stack project (Express + MongoDB + authentication + image uploads) is the most-cited reason people finish the course feeling they built something real. Smaller mid- course exercises are praised as friction-removing but less portfolio-defensible.

Strong fundamentals on HTML, CSS, vanilla JS and a basic Node/Express/Mongo stack that transfers to most web roles. Weaker on modern tooling, TypeScript and React — most learners take a follow-up framework course to close the gap to a 2026 front-end job.