KeyboardEvent.keyCode deprecated. What does this mean in practice?

Question

According to MDN, we should most definitely not be using the .keyCode property. It is deprecated:

https://developer.mozilla.org/en-US/do

Answer 1

For instance if you want to detect whether the "Enter"-key was clicked or not:

Instead of

event.keyCode === 13

Do it like

event.key === 'Enter'