Sign in Start free

Interview roadmap · free

JavaScript Developer interview roadmap

The 5 skills JavaScript Developer interviews test, in the order to prepare them: the 2 core skills first, then the supporting ones, then the HR round every job has. Each skill climbs three steps, from explaining the basics to handling a real situation.

  • 5 job skills
  • 2 core
  • 36 topics to know
  • 3 steps each
  • Fresher to 6 years
Take the free mock interview Check yourself

First interview free: 3 questions, about 10 minutes · No card needed

Check yourself as you read. Tap each topic you could explain in an interview today. It stays on this device, and it's only your own guess: a mock interview shows where you really stand.

  1. Stage 1: Core skills

    Asked in almost every interview for this job. Start here.

    1. JavaScript

      Core language

      1. Fundamentals
      2. Applied
      3. Scenario

    2. JavaScript

      Async and promises

      1. Fundamentals
      2. Applied
      3. Scenario

  2. Stage 2: Supporting skills

    Asked often. They set strong candidates apart.

    1. JavaScript

      TypeScript

      1. Fundamentals
      2. Applied
      3. Scenario

    2. Web platform

      Browser and networking

      1. Fundamentals
      2. Applied
      3. Scenario

    3. Testing

      Debugging

      1. Fundamentals
      2. Applied
      3. Scenario

  3. Stage 3: HR and behavioral round

    Every job has this round. Communication is scored in every answer.

    1. Behavioral

      Ownership and impact

      1. Fundamentals
      2. Applied
      3. Scenario

    2. Behavioral

      Teamwork and conflict

      1. Fundamentals
      2. Applied
      3. Scenario

    3. Behavioral

      Learning and growth

      1. Fundamentals
      2. Applied
      3. Scenario

  4. Interview-ready

    The core skills answered strongly on applied questions, at least half of the job's skills assessed and none of the key ones weak. Then your readiness reads Interview-ready.

Free interview roadmaps and mock interviews: https://myskillgrid.com/roadmaps/javascript-developer/

The three steps

How each skill is tested

Questions get harder as you get better at a skill. A step counts once you answer a question at that level well, in an interview or a practice session. Nobody ticks a step off: you show it.

  1. 1

    Fundamentals

    Explain the basics and the key terms in your own words.

  2. 2

    Applied

    Use it on a real task, the way the job does.

  3. 3

    Scenario

    Decide in a realistic situation and explain the trade-offs.

Freshers start at the fundamentals. With 1 to 6 years of experience, questions start at the applied step.

FAQ

JavaScript Developer interviews, answered

Something else? Send us a message.

What does a JavaScript Developer interview cover?

5 of the job's own skills: the core ones, Core language and Async and promises, then TypeScript, Browser and networking and Debugging. Every interview also has the HR and behavioral round (Ownership and impact, Teamwork and conflict and Learning and growth).

Which skills should I prepare first for a JavaScript Developer interview?

Start with the core skills: Core language and Async and promises. They come up in almost every JavaScript Developer interview. Then move on to TypeScript, Browser and networking and Debugging.

What kind of questions are asked in a JavaScript Developer interview?

The interview types are Mixed, Technical and Behavioral. Each skill is asked at three levels: Fundamentals (explain the basics and the key terms in your own words), Applied (use it on a real task, the way the job does), Scenario (decide in a realistic situation and explain the trade-offs).

Is this JavaScript Developer roadmap for freshers?

Yes. Freshers start at the fundamentals. With 1 to 6 years of experience, questions start at the applied step.

How do I know I'm ready for a JavaScript Developer interview?

When the core skills are answered strongly on applied questions, at least half of the job's skills are assessed and none of the key ones is weak. A mock interview measures this for you, skill by skill.

Is it free?

Reading the roadmap is free. Tracking your progress on it needs a free account, and your first mock interview (3 questions) is free, with no card needed.

See where you really stand

Your first JavaScript Developer interview is free: 3 questions, a score and feedback for each, and your first steps on this roadmap, in about 10 minutes.

Start free interview