3 pages from the guide: the cover, the contents (100 questions in 8 sections) and one complete question with its answer, code and interview tips.
"What is the output?" rounds test whether you understand how JavaScript really works, not whether you can recite definitions. This guide gives 100 short programs, each with the exact output, a step-by-step explanation, the wrong answer most people give and a rule to remember. Topics run from type coercion, hoisting and closures through this, prototypes and classes to the event loop, promises and async/await, numbers, modern syntax, JSON and dates.
100 questions in 8 sections, 100 code examples in a 113-page PDF (2026 edition).
Angular e-books, Node.js and JavaScript video courses, 100+ front-end e-books and 3000+ interview Q&A.
No reviews yet
Cover the output, predict it line by line, then compare. Run each snippet yourself in Node.js and change one thing at a time. Where an answer is specific to Node (process.nextTick, setImmediate, top-level this), the explanation says so.
It prints a1, b, sync, a2, p. An async function runs synchronously until its first await, so a1 and b print immediately. The code after await is a microtask queued when the awaited promise is already resolved, which puts a2 ahead of the callback p that was queued later.
It is a digital download (PDF). After payment it appears in your Library right away.
It covers this topic in depth. It is one topic from the TechTribers Java Interview Series, which has all 23 parts (1,200+ questions) in one bundle.
No reviews yet — be the first to review this product.
75 Next.js App Router interview questions for Next.js 16: routing, Server and Client Components, caching and revalidation, Server Actions, rendering, proxy and auth, SEO and deployment.
No reviews yet
100 React 19 interview questions with answers: hooks, Actions, useActionState, the use API, Server Components, performance, testing, accessibility and what-is-wrong-with-this-component bugs.
No reviews yet
Tech Tribers