Coding Help Tips Resources Tutorials
Google Apps Scripts and Web Development Tutorials and Resources by Laurence Svekis
🚀 Node.js Interview Quiz (100 Questions with Answers) 1️⃣ Node.js Fundamentals (1–15) 1) What is Node.js? Answer: A JavaScript runtime built on Chrome’s V8 engine.Explanation: Node.js allows JS to run outside the browser, mainly for servers and tooling. 2) Is Node.js single-threaded? Answer: Yes (but it uses background threads).Explanation: JS runs on one thread, but … Read more
1) Basics, Types, Coercion (1–15) 1) What is the result of typeof null? A) “null” B) “object” C) “undefined” D) “number”Answer: B Explanation: A long-standing JS quirk: typeof null returns “object”. 2) What does NaN === NaN evaluate to? A) true B) falseAnswer: B Explanation: NaN is not equal to anything, even itself. Use Number.isNaN(x). … Read more
🟦 JavaScript Deep Dive — Issue #10 (Final) Building AI-Powered JavaScript Applications (Without Losing Control) How to integrate AI responsibly, predictably, and maintainably in real-world JS apps AI is no longer a novelty in JavaScript applications.It’s becoming infrastructure — used for search, assistants, personalization, content generation, tutoring, analytics, and automation. But most examples online focus … Read more
🟦 JavaScript Deep Dive — Issue #9 The Future of JavaScript: What’s Coming Next (And What Actually Matters) New language features, real-world impact, and what to learn vs ignore Every year brings new JavaScript features, proposals, APIs, and “next big things.”Some of them quietly improve everyday development.Others sound exciting… and never really change how we … Read more
If you’re serious about improving your JavaScript skills, reading alone isn’t enough — you need structured, real-world practice. I’ve just published 30 additional JavaScript coding exercises (Exercises 21–50), each one including:✅ Full, working code✅ Clear learning objectives✅ Step-by-step explanations✅ Practical DOM, async, and browser API examples This set goes beyond basics and helps you practice … Read more
The Weird, the Subtle, and the Powerful in JavaScript Get the book on Amazon Free until Dec 27th US Link Canada Link https://www.amazon.com/dp/B0GBTM5SCY https://www.amazon.ca/dp/B0GBTM5SCY GitHub Repohttps://github.com/lsvekis/The-Weird-the-Subtle-and-the-Powerful-in-JavaScript Introduction Why JavaScript Is Weird — and Why That’s a Good Thing JavaScript is one of the most widely used programming languages in the world—and also one of the … Read more
🟦 JavaScript Deep Dive — Issue #8 JavaScript Architecture Patterns for Large Applications How to structure code that scales without collapsing under its own weight Small JavaScript projects forgive bad structure.Large ones punish it relentlessly. As applications grow, the biggest challenges are no longer syntax or APIs — they’re: This issue focuses on architecture patterns … Read more
🟦 JavaScript Deep Dive — Issue #7 Closures, Scope & Memory: What Really Happens Under the Hood Why closures are powerful, dangerous, and often misunderstood Closures are one of JavaScript’s greatest superpowers — and one of its most common sources of bugs, memory leaks, and confusion. Most developers use closures.Far fewer truly understand what they … Read more
🟦 JavaScript Deep Dive — Issue #6 How JavaScript Engines Optimize Your Code A practical V8 (and JS engine) deep dive every serious JS dev should understand Most JavaScript developers write code assuming the engine will “just handle it.” And often, it does. But once performance matters — large apps, data-heavy UIs, animations, AI workloads, … Read more
🟦 JavaScript Deep Dive — Issue #5 Beyond Promises: Advanced Async & Concurrency Patterns in JavaScript How modern JS handles real-world async workloads at scale Promises and async/await made JavaScript easier to read — but they didn’t magically solve concurrency, coordination, cancellation, or backpressure. As apps grow more complex (AI calls, streaming APIs, real-time UIs, … Read more