alert() and prompt() are blocking functions, which means that nobody can do anything until they've clicked OK. I suggest making your own popup which appears at the bottom of the screen and doesn't stop input.
For example, you could do something like

<div style="position:fixed;bottom:0px;width:100%;background-color:white;">Text here</div>

yes @19wintersp

so it would also affect gameplay too, forgot to mention that,
but ig you could make an async alert (i think):

async function asyncAlert(txt) {
  return new Promise(() => alert(txt));
}

@19wintersp

@Coder100 I think that alert() blocks the entire renderer and event loop, so even async won't work.

yeah darn you alert @19wintersp

this look promising @19wintersp

@Coder100 I think it just uses divs which have position:fixed; and some high z-index value. You could make it so that they appear and flash or something.

@19wintersp yeah, im sure i can implement it with more modern features

or maybe royalcoder could just implement this in p5:

rect(0, 0, 20, 20);
// ...

strange that he didn't and chose to hurt us
@19wintersp

maybe that's the point...
survive so you don't get annoyed
lol @19wintersp

@Coder100 A good incentive to boost scores ;)

@Coder100 Just cobbled this together Could do with some styling of course.

wow nice @19wintersp

how do you close? @19wintersp

@Coder100 I'm not that good in promises and async functions, but I will see if I can learn it better.

good luck :) @RoyalCoder1234