Learn basics of React.js making the tests pass
Reliability breakdown
Component scores measured daily from GitHub activity (2026-02-19).
Activity on 0 of 8 tracked days in the last 90 and 0 of 8 in the last 30.
Merged 0 of 0 PRs opened and closed 0 of 0 issues opened over the last 90 tracked days — PR flow carries 55% of this component, issue flow 45%.
0 releases in the last 180 days, 0 in the last 90 and 0 in the last 30 — a steady cadence scores highest.
Last push 742 days ago — freshness decays as pushes age (roughly halves every 83 days without a push).
Modeled — lower is better; concentration of commits in few maintainers. Contributors graph
Topics
Jump into the topic listings this repository belongs to.
Measured history
Weekly GitHub totals with 30, 90, and 180 day views.
Feb 15, 2026
Current0
Previous0
Weekly star gains
GitHub GraphQL current stargazer cohort, reconstructed from starredAt events and totalCount retrieved in one stable pagination walk. GitHub does not expose historical unstar events, so this is not an exact ledger of past star counts.
37 observed daily rows. Missing days are not fabricated.
| Date | Value |
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reactjs_koans is a learning repository that teaches React fundamentals through test-driven exercises. It presents failing tests that guide users through concepts such as components, props, state, and rendering patterns by implementing small code changes. It is commonly used in workshops, onboarding programs, and self-paced study environments where JavaScript developers practice React basics with immediate test feedback.
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