JavaScript

JavaScript Deep Dive When Correct Code Produces the Wrong Result

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🟦 JavaScript Deep Dive — Issue #28 JavaScript Race Conditions: When Correct Code Produces the Wrong Result The bugs that depend on timing — and disappear when you try to debug them Your JavaScript looks correct. The API works. There are no syntax errors. The application works 99% of the time. But occasionally: Welcome to … Read more

JavaScript Memory Leaks: Deep Dive

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🟦 JavaScript Deep Dive — Issue #27 JavaScript Memory Leaks: The Bugs That Get Worse the Longer Your App Runs How to find the objects JavaScript should have forgotten — but didn’t Your JavaScript application works perfectly when it starts. Ten minutes later, it’s a little slower. An hour later: You refresh. Everything is fast … Read more

JavaScript Mental Models That Make Everything Click JavaScript Deep Dive

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🟦 JavaScript Deep Dive — Issue #26 JavaScript Mental Models That Make Everything Click Stop memorizing JavaScript behavior. Start understanding why it behaves that way. There’s a point in learning JavaScript where knowing more syntax stops helping. You know functions. You know objects. You know Promises. You know async/await. You know closures. But then JavaScript … Read more

JavaScript: The Movie — Why AI Might Change How We Teach Forever

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There’s something fascinating happening right now in education. Not because AI can answer questions.Not because AI can generate code.And not because AI can automate parts of teaching. The real shift is this: For the first time, instructors can create cinematic learning experiences without needing a Hollywood budget. Recently, I experimented with this idea by creating … Read more

Writing JavaScript That’s Easy to Delete Issue #25

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🟦 JavaScript Deep Dive — Issue #25 Writing JavaScript That’s Easy to Delete The ultimate test of good code isn’t how it works — it’s how easily it can be removed Most developers focus on writing code that works. Better developers focus on writing code that is clean. But senior engineers optimize for something else … Read more

Technical Debt in JavaScript Deep Dive 24

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🟦 JavaScript Deep Dive — Issue #24 Technical Debt in JavaScript: How It Builds — and How to Control It Why debt isn’t the problem… unmanaged debt is Every JavaScript codebase has technical debt. Even well-designed systems accumulate it over time. The problem isn’t debt itself —the problem is when it becomes invisible, uncontrolled, and … Read more

Vibe Coding JavaScript Games First Chapters

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Vibe Coding JavaScript GamesBuild 15 Interactive Games While Mastering Real-World JavaScript, Game Logic, and AI-Assisted https://github.com/lsvekis/Vibe-Coding-with-JavaScript-Book https://lsvekis.github.io/Vibe-Coding-with-JavaScript-Book What if you could learn JavaScript by building real games—and learn how to think like a developer at the same time? Vibe Coding JavaScript Games is a hands-on, modern guide to learning JavaScript through the creation of 15 … Read more

Build a JavaScript Slot Machine Game with localStorage and a Jackpot Counter

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Building small browser games is one of the fastest ways to improve your JavaScript skills—and it’s actually fun. https://github.com/lsvekis/JavaScript-Jackpot https://lsvekis.github.io/JavaScript-Jackpot In this tutorial, you’ll learn how to create a fully functional slot machine game using: By the end, you’ll have a complete mini-game you can expand into a portfolio project, course example, or teaching asset … Read more

How Senior Engineers Evaluate Code Issue #23

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JavaScript Deep Dive — Issue #23 JavaScript Code Reviews: How Senior Engineers Evaluate Code Why great reviews improve systems, not just syntax Most developers think code review is about catching mistakes. But senior engineers know the real goal is different. Code review exists to improve: A great code review doesn’t just fix a bug today … Read more

Observability, Logging & Monitoring in JavaScript Systems

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🟦 JavaScript Deep Dive — Issue #22 Observability, Logging & Monitoring in JavaScript Systems How senior engineers understand what their systems are actually doing Many developers build applications that work perfectly…until they reach production. Then questions appear: The problem usually isn’t the code. The problem is lack of visibility. Senior engineers don’t rely on guesswork.They … Read more