Forgot touse keyin .map()Accidentallytriggersinfinite re-renderz-indexwarIt’s not abug, it’sa featureBugsmagicallyvanish after5th refreshAccidentallypushes toprodAccidentallypushednode_modulesposition:absoluteGoogledhow tocentre adivGPT thecommitmessageLighthousepainCodecompiles,but the pageis blankDidn'ttest onSafariDebugs aCSS bug bychangingcolorsWorkson mydeviceUsesuseEffectforeverythingMinorchangeruined theUIAccidentallyshows 100open tabsduringscreen sharecss with30k linesof codeInstalls 1 npmpackage →40dependenciesReactthrowshydrationerror in prodBlamescachingforeverythingconsole.log()UnexpectedfigmanightmareForgot touse keyin .map()Accidentallytriggersinfinite re-renderz-indexwarIt’s not abug, it’sa featureBugsmagicallyvanish after5th refreshAccidentallypushes toprodAccidentallypushednode_modulesposition:absoluteGoogledhow tocentre adivGPT thecommitmessageLighthousepainCodecompiles,but the pageis blankDidn'ttest onSafariDebugs aCSS bug bychangingcolorsWorkson mydeviceUsesuseEffectforeverythingMinorchangeruined theUIAccidentallyshows 100open tabsduringscreen sharecss with30k linesof codeInstalls 1 npmpackage →40dependenciesReactthrowshydrationerror in prodBlamescachingforeverythingconsole.log()Unexpectedfigmanightmare

Front-end Bingo - Call List

(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.


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  1. Forgot to use key in .map()
  2. Accidentally triggers infinite re-render
  3. z-index war
  4. It’s not a bug, it’s a feature
  5. Bugs magically vanish after 5th refresh
  6. Accidentally pushes to prod
  7. Accidentally pushed node_modules
  8. position: absolute
  9. Googled how to centre a div
  10. GPT the commit message
  11. Lighthouse pain
  12. Code compiles, but the page is blank
  13. Didn't test on Safari
  14. Debugs a CSS bug by changing colors
  15. Works on my device
  16. Uses useEffect for everything
  17. Minor change ruined the UI
  18. Accidentally shows 100 open tabs during screen share
  19. css with 30k lines of code
  20. Installs 1 npm package → 40 dependencies
  21. React throws hydration error in prod
  22. Blames caching for everything
  23. console.log()
  24. Unexpected figma nightmare