identify key pressed javascript code example

Example 1: js when key is pressed

document.addEventListener("keypress", function(event) {
	// do stuff
});

Example 2: javascript key pressed enter

$('.container').on('keydown', 'input', function(e) {
  if (e.keyCode === 13) {
    e.preventDefault();
  	e.stopImmediatePropagation();
    //Do your stuff...
  }
});