HTML Haiku #47
4.9
Evaluation
4.9 avg
4.5 physics accuracy
7.5 design quality
5.5 animation quality
2 slider ux
5.5 completeness
4.5 overall
✓ Two crowns ✓ Same mass, different density ✓ Vertical slider — Slider works — Slider controls crowns — Slider direction correct ✓ Full slider range ✓ Fall animation ✓ Water displacement ✓ Rising water level ✓ Splash effects — Physics correct ✓ Live mass value ✓ Live volume value ✓ Live density value ✓ Live displaced water ✓ Gilded displaces more ✓ Heureka animation ✓ No external deps ✓ Light bg / dark text ✓ Self-contained HTML

Critical JavaScript bug: `sliderValue` is reassigned as a number inside `animate()` (shadowing the DOM element reference), causing a runtime TypeError crash that renders the entire simulation non-functional after the first frame.

7,270 output tokens · claude-haiku-4-5-20251001 · end_turn

Critical JavaScript bug: `sliderValue` is reassigned as a number inside `animate()` (shadowing the DOM element reference), causing a runtime TypeError crash that renders the entire simulation non-functional after the first frame.