keycode 13 is for which key

Question

Which is the key on the keyboard having the keycode as 13?

switch(key) {   case 37:      $.keynav.goLeft();     break;   case 38:      $.keynav.goUp();     break;   case 39:      $.keynav.goRight();     break;   case 40:      $.keynav.goDown();     break;   case 13:      $.keynav.activate();     break; } 

Answer 1

It's the Return or Enter key on keyboard.

Answer 2

That would be the Enter key.