How do I handle a click anywhere in the page, even when a certain element stops the propagation?

Question

We are working on a JavaScript tool that has older code in it, so we cannot re-write the whole tool.

Now, a menu was added position fixed to the bottom and the clien

Answer 1

document.body.addEventListener("keyup", function(event) {
  if (event.keyCode === 13) {
  event.preventDefault();
  console.log('clicked ;)');
}
});

DEMO

https://jsfiddle.net/muratkezli/51rnc9ug/6/