Interview Prep
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Structured interview mastery

Master every topic before the next one.

Most prep gives you fragments. We give you complete topic mastery — understand it, apply it, go deep, prove it — with runnable code and real interview Q&A.

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Topics are free to read. Sign in to save progress, points, and streaks.

Fragmented prep doesn't build real understanding

Scattered Q&A lists
GreatFrontEnd threads and blog posts — no order, no depth, no proof you learned it.
Algorithms without concepts
LeetCode drills patterns but skips the "explain closures" round that senior interviews expect.
Video courses you can't revisit
Hard to jump to one topic at 2am before an interview. You need reference-grade structure.

One mastery flow for every topic

Definition → examples → deep dive → interview Q&A → prove it. No skipping ahead until you actually understand.

  1. 1. Understand — clear definitions and mental models
  2. 2. Apply — runnable examples and Sandpack playground
  3. 3. Go deep — edge cases and follow-up prompts
  4. 4. Prove it — Q&A scores, challenges, mastery gates

Built for senior-level depth

Structured curriculum
40 JavaScript topics and a full React track — ordered for interview readiness, not random blog order.
Runnable playground
Edit code, predict output, pass coding challenges. JavaScript and JSX Sandpack templates.
Mastery gates
Mark Q&A as "Got it", pass challenges, unlock progress rings — optional hard lock for disciplined learners.
Gamification when signed in
Points, streaks, and cross-device sync — without hiding content from guests.
Always free to read
Every topic page is public. Accounts save progress and stats, not access.
Multi-track roadmap
JavaScript and React live. Next.js, Node, Express, and more reuse the same infrastructure.

Start with JavaScript, grow into full-stack

Same UX on every track — pick up where prerequisites leave off.

JavaScript
Master JavaScript from fundamentals to senior interview depth.

40 topics · mastery gates

Open JavaScript track
React
Components, hooks, rendering, and senior React interview depth.

17 topics · mastery gates

Open React track
Behavioural Interviews
STAR answers, story banks, and CV and project deep-dives for the non-coding round.

17 topics · mastery gates

Open Behavioural Interviews track
Frontend System Design
Design feeds, search, realtime apps, and the components they are built from, the way senior frontend rounds actually ask it.

10 topics · mastery gates

Open Frontend System Design track

Frequently asked questions

What makes Elite Interview Prep different from LeetCode?

LeetCode focuses on algorithm puzzles. We focus on concept mastery — closures, the event loop, React hooks, and the follow-up questions senior interviewers ask. Each topic includes definitions, runnable examples, deep dives, and Q&A with mastery gates.

How does topic mastery work?

Every topic has interview Q&A. Mark answers as "Got it" until you hit the mastery threshold. Some topics add coding challenges. Progress rings and optional hard locks encourage finishing one topic before rushing to the next.

Is the content free to read without an account?

Yes. All topic pages are public — read definitions, examples, and interview questions without signing in. Create a free account to sync progress, earn points, and keep streaks across devices.

Which interview prep tracks are available today?

JavaScript and React tracks are fully published, with the exact topic count shown on each track card. Additional tracks — Next.js, Node.js, Express, Hono, NestJS, and more — are on the roadmap with the same structure.

How should I prepare for JavaScript interview questions?

Start with foundation topics (hoisting, closures, this, prototypes), then execution (event loop, promises, async/await), then patterns and browser APIs. Use the playground to run code and the Q&A tab to self-test before moving on.

Does this platform include React hooks interview questions?

Yes. The React track covers components, JSX, hooks (useState, useEffect, useContext, useReducer, custom hooks), patterns, and performance topics — each with flashcards, structured Q&A, and JSX Sandpack playgrounds.

Stop collecting questions. Start mastering concepts.

From "I've heard of closures" to "I can explain it in an interview."

Start learning — free