Would someone elaborate on the choice of canvas vs DOM for grids like this? There is this older stackoverflow discussion[1] that seems to indicate that one can get decent performance with large data volumes by maintaining DOM cells for just the viewport area and managing the grid content in response to scroll events. Since the row heights are fixed, the scrolling algorithm should be manageable. So why a canvas rather than DOM?

[1] https://stackoverflow.com/questions/2402953/javascript-data-...