[robbiejs]

You can change thousands of DOM nodes in an eye-blink, but not while scrolling. It's too much for the DOM to repaint/redraw itself and keep 60fps scrolling.

I have managed to create the fastest Javascript Data Grid out there by not working with indivual <td> or <div> nodes for cells, but by using a neat CSS style: this only needs one dom node per COLUMN, not per cell.

The downside is that the product does not support multi-line rows.

Here's a performant demo of One Million Cells: https://www.datagridxl.com/demos/one-million-cells.