# greatfrontend/top-javascript-interview-questions

Top JavaScript interview questions and answers for Frontend Engineers (updated for 2026)

Repository: https://github.com/greatfrontend/top-javascript-interview-questions
Canonical: https://ross.abutalabs.com/products/top-javascript-interview-questions
Homepage: https://www.greatfrontend.com/questions/javascript-interview-questions/quiz?gnrs=github
Language: MDX
License Family: other
Topics: front-end-development, interviews, javascript, javascript-interview-questions, react, reactjs, web-development
Last push: 2026-08-16T08:16:11+00:00

## Health v2 (maintenance only)
Score: 68/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 98, release rhythm 35, longevity 58
- inputs: {"age_days": 814, "days_push": 17, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 9957, forks 522 (observed 2026-08-28T04:10:38.977235+00:00)

## What it is
A curated collection of hundreds of JavaScript interview questions with answers for Frontend Engineer interviews, maintained by GreatFrontEnd and updated for 2026. Questions are organized by importance and difficulty, covering core concepts like hoisting, the event loop, and `this`.

## Use cases
- prepare for a frontend engineer interview
- study javascript interview questions and answers
- review javascript concepts like hoisting and the event loop
- find commonly asked react and javascript interview questions
- refresh javascript knowledge before an interview
- practice quiz-style frontend interview questions by difficulty

## When to choose
- you are preparing for a front end or JavaScript developer interview
- you want curated, high-quality answers written by ex-FAANG interviewers
- you need a quick refresher on core JavaScript concepts
- you want questions organized by difficulty and importance

## When to avoid
- you need a runnable library or tool rather than study material
- you want backend or non-JavaScript interview prep
- you need hands-on coding practice with automated test cases, which requires the paid GreatFrontEnd platform
- you expect to contribute content changes, since this is a read-only public mirror

## Facets
- artifact type: learning-resource
- maturity: active
- function: documentation, developer-tools
- domain: web-development, frontend, education, tutorials
- platform: cross-platform
- tags: javascript, interview-preparation, react, interview-questions, frontend-interview, study-guide, mdx, web

## Member repositories
- greatfrontend/top-javascript-interview-questions (main) score 68

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:38.977235+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:20:12.437694+00:00, confidence not recorded.
  - readme: https://github.com/greatfrontend/top-javascript-interview-questions (fetched 2026-08-28T04:10:38.977235+00:00, sha 9b51a2c7fc11)
  - homepage: https://www.greatfrontend.com/questions/javascript-interview-questions/quiz?gnrs=github (fetched 2026-08-29T08:20:11.407593+00:00, sha 71cf7f8d8ae2)
  - site_page: https://www.greatfrontend.com/interviews/pricing (fetched 2026-08-29T08:20:11.417286+00:00, sha 44e01c8ba4e7)
- Data as of 2026-08-30T08:39:29.467469+00:00.