Every website that automatically does a calculation when you change numbers in a box (say, order quantity) should have a checkbox for "update immediately".

Digi-Key sitting here taking twenty seconds when I click on the quantity field for any item to recalculate the entire cart. Only 73 more to go...

@bipolaron A few months ago I tried to change a product amount and deleted the 1 from the text box and before I could type the 5 to replace it, the site removed the item from my cart.

I think it took me a minute to understand what had happened.

@bipolaron

I feel like modern webpages might not have this problem. I'm a noob webpage developer, but I've been learning Svelte, which is sort of a new reactive web front end. One of the benefits is the kind of "concurrency" that handles page content updates when backing data changes. One common situation is when changing a form value causes an update that requires a retrieval from a back end database, which doesn't stop real-time editing...