Is it possible to see if a save exists and if so perform an action?

This might seem very basic, but I've added a "load game" button to my start menu and I want to keep it hidden if there's no saved game, is that possible?

If not, is a valid workaround just having a global variable keeping track if the player pressed the "save game" button or not?

Thanks!

I would use a variable that would track if the player has saved any data then base the actions off of that.

I use local storage and save a value there. Global variable won't make much sense bceause that would be included in the saved game which means you need to load it first.