Delta update directive using array

[jamesli2021]

Not sure if this idea is worth discussion for a delta update using array for HTML contents or components instead of x-for loop or re-render the whole content whenever only a small portion data is change.

Case 1: Instead of re-render 100 rows, it could re-render only certain rows that has been change. It's probably possible to do that with pure JavaScript.

Case 2: Stock exchange dashboard, hundreds of DIVs in each array row can be update with minimal impact on repaint layout performance.

Sound like vdom but just a simple idea.