What is the easiest way to apply skeleton loading(as shown in the image below) in the Ext JS grid and similar components? Skeleton Loading
For grids i would start by looking at the "emptyText" config.A text to be shown when no rows are loaded. This can also include HTML tags. Try to build something there.
https://docs.sencha.com/extjs/7.0.0/classic/Ext.panel.Table.html#cfg-emptyText