dataTable/TEST.md

# DataTable Performance Tracking

## v1.0.4: Extreme Optimization (Restored)
- **Data**: 10,000 items, 10 columns.
- **Scroll Test**: 100 scrolls.
- **Results**:
  - refreshTime (total): ~103ms (for 100 frames)
  - averageRefreshTime: **1.03ms** per frame
- **Optimizations**:
  - Full Event Delegation (MouseDown/MouseOver/DblClick).
  - CSS Grid Layout (Removed thousands of per-cell `$style` bindings).
  - Synchronous Scroll Handling (Removed rAF to ensure zero-latency補位).
  - Native Context Access (`_ref`) for zero-cost item resolution.
  - Targeted Row Refresh for Paste/Edit operations.
  - Manual DOM Spacers (Removed `$if` to prevent scroll anchoring jumps).

## v1.0.0: Minimal Foundation
- **Data**: 10,000 items, 1 column.
- **Scroll Test**: 100 scrolls (20,000px total).
- **Results**:
  - refreshCount: 101
  - refreshTime (total): ~45.7ms
  - averageRefreshTime: 0.45ms