I have a list of items with checkbox and there is one checkbox at the end labelled "Select All". I would like to check all the items when the user checks the "Select All" checkbox, or maybe even clicking a button. Is there a way to do this or this is not possible?
It’s not possible unfortunately. All the code you write is run server side, therefore there is no client side code to update your UI. The only way to change content on a card is to replace the card with a new card. You could simulate this action by returning a sort of cloned card with the change that you want to happen, but because it will return from the server, it won’t be as seamless as you would like. I hope that helps.