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test-fast-grid

v0.0.1

Published

World's most performant DOM-based table

Downloads

73

Readme

World's most performant web table - Try it!

A multithreaded web table, capable of running 120fps while sorting/filtering/scrolling simultaneously.

Posting updates & soon video walk-through: https://x.com/GabrielPeterss4. DMs are open, curious to hear about use-cases or advise on how to use it :)

Capabilites

  • Multithread sorting/filtering using a shared array buffer
  • Display millions rows at O(1), you are only limited by browser RAM
  • 120 fps while cruising the scrollbar
  • Never drop a frame while filtering or sorting

Technical details

The most performant DOM-based grid.

  • Uses a shared array buffer to store order/filtering of rows, computed in a web worker off-thread
  • Resuses all part of DOM-tree
  • Own event loop to prioritize tasks. Never drops a frame, even when filtering millions of rows
  • Non-passive scrolling. Rows will never be seen rows loading into the UI while scrolling
  • Custom virtualization and scrolling. Not limited by browsers 15 million pixel div height limit
  • Custom built scrolling for phones, and runs at 60fps even on older phones

One million rows benchmark (M2 Max Pro)

| Benchmark | Score | | -------------------------------------- | ------ | | Scroll 40 rows every frame | 120fps | | Filtering | 200ms | | Time to initialize grid and show rows | 1.5ms | | Filter&sort simultaneously every 300ms | 120fps |

zero copy datatype

TODO

  • iphone safari has a very low memory limit - disable multithreading there
  • expand synthetic event-loop to include scrolling & rendering cell contents
  • can maybe make GC be a bit less expensive by reusing cell classes more..
  • if user zoomed in/out scrollbar will navigate to fast/slow, needs to be relative to the scroll track
  • sort/filter all columns, not just second lol
  • resize columns
  • custom cells (you can kinda already do this though, just add a new cell class)
  • make sure rows are ordered correctly for text selection