the practice room ✎

Practice like it's the real interview.

Six ways to train, from a 60-second blitz to a full mock interview. Earn XP, keep your streak alive and collect every sticker. No account needed: it's all saved in this browser.

your levelIntern

0 XP200 XP to Junior Dev

🔥 start a streak today

✎Quiz356 multiple-choice & “what's the output?” questions with explanations.↻Flashcards875 interview questions with spaced repetition.⏱Mock interviewTimed questions, model answers and a hiring verdict.⚡Speed round60 seconds, combos, personal bests. Addictive.🎙Voice coachAnswer out loud: key points hit, filler words and pace, scored live.⌨ProblemsLeetCode-style DSA problems in JavaScript or Java, with test cases.{}Coding round14 challenges, tests run in your browser.

Prepare for your next round

JavaScript fundamentals round

Explain closures, the event loop and this binding out loud, with an example each.

Study answers Quick quiz Rehearse aloud

Frontend framework round

Walk through rendering, state and effects, and how you would debug a re-render loop.

Study answers Quick quiz Rehearse aloud

Java & Spring Boot round

Talk through dependency injection, transactions and how a request reaches your controller.

Study answers Quick quiz Rehearse aloud

System design round

Practise estimating load, choosing storage and explaining the trade-offs you made.

Study answers Quick quiz Rehearse aloud

Interview readiness checklist

Turn preparation into concrete steps. Your checklist is saved with your progress in this browser.

0 / 7 ready

Read the job description and identify the three most important skills.
Rehearse a 60–90 second introduction with a relevant example.
Prepare a project walkthrough: problem, your contribution, trade-offs and outcome.
Prepare honest STAR stories for collaboration, ownership and a mistake.
Solve a coding problem aloud, then discuss complexity and edge cases.
Prepare questions about team priorities, expectations and feedback.
Check the interview time, meeting link, microphone and coding environment.

Follow the frontend study roadmap →

Today's focus picked for you

Question of the day

One quiz question a day, with the reasoning behind the answer. It appears here once the page has loaded.

Weak spots

Chapters where your quiz accuracy is lowest.

Answer a few quiz questions and your weak spots show up here.

Quick starts

↻ Retry my mistakes ↻ Review due cards ✦ 10 new questions ⏱ 15-min mock

Your progress saved in this browser

0day streak 🔥

0total XP

0questions answered

–quiz accuracy

0flashcards due

0challenges solved

Accuracy by chapter

JavaScript

not started

TypeScript

not started

React

not started

Angular

not started

HTML & CSS

not started

Node.js

not started

Java

not started

Spring Boot

not started

SQL & PostgreSQL

not started

Docker

not started

Git & CI/CD

not started

Data Structures & Algorithms

not started

System Design

not started

Recent sessions

✎Your practice sessions will appear here.

Sticker collection 0 / 16

★ Saved questions

Tap “☆ save” on any quiz question to keep it here.

Your data

Everything is stored locally in this browser. Export it to move to another device, or start fresh.

⬆ Import