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RED SAGSkills

Medium Frontend Developer questions

34 questions · 10 points each for a correct first answer.

easymediumhard
  1. 1.setTimeout vs microtasksmedium
  2. 2.Closures in a var loopmedium
  3. 3.Stale value in useEffectmedium
  4. 4.Which CSS rule winsmedium
  5. 5.Debounce vs throttle for searchmedium
  6. 6.What INP measuresmedium
  7. 7.Event delegationmedium
  8. 8.Multiple setState callsmedium
  9. 9.Arrow function as an object methodmedium
  10. 10.One failed request breaks the dashboardmedium
  11. 11.What an async function returnsmedium
  12. 12.Function hoisting and letmedium
  13. 13.Spread copies only one levelmedium
  14. 14.Responsive card grid without media queriesmedium
  15. 15.position: sticky does not stickmedium
  16. 16.Ref value not shown on screenmedium
  17. 17.Resize handler that runs many timesmedium
  18. 18.Syncing derived values with an effectmedium
  19. 19.Form keeps the previous user datamedium
  20. 20.Test fails before data arrivesmedium
  21. 21.toBe fails on equal objectsmedium
  22. 22.Flaky end-to-end test with fixed waitsmedium
  23. 23.Content jumps when images loadmedium
  24. 24.Slow LCP from the hero imagemedium
  25. 25.Caching fingerprinted bundlesmedium
  26. 26.Fixing a CORS errormedium
  27. 27.Where to keep a session tokenmedium
  28. 28.Clickable div and keyboard usersmedium
  29. 29.What showModal gives youmedium
  30. 30.unknown versus anymedium
  31. 31.useState in a Server Componentmedium
  32. 32.Secret key with NEXT_PUBLIC_ prefixmedium
  33. 33.reduce on an empty arraymedium
  34. 34.Which value a CSS variable takesmedium