How do I detect if the '+' key is pressed (without the shift)

I want to trigger the KeyboardEvent for the '+' key even if the '=' key is pressed

'shift+=' is '+' on English keyboards, but on other keyboards, the key for which 'shift+key' is '+' might be different. How do I account for all such cases?

Comments

[Ampersanda]

when keydown and some other events, an event has key property that has name of your keyboard key button.

input.addEventListener('keydown', function(e) {
  if (e.key === '+') {
    // ... do your code
  }
});