DataGridXL is used by 10 million end users. It's tested on all kinds of devices and browser combinations.
Browsers can handle AND update really large DOMs, but they still choke on doing all of these actions (repaint, reflow) WHILE SCROLLING, which is a different game.
Browsers can handle AND update really large DOMs, but they still choke on doing all of these actions (repaint, reflow) WHILE SCROLLING, which is a different game.