Javascript/onkeyup

---

var s1Input = document.getElementById("s1Input");
s1Input.onkeyup = function(){
  var s1p = document.getElementById("s1p");
  s1p.innerHTML = s1Input.value;
}
	

const s2Text = document.getElementById("s2Text");
s2Text.addEventListener('keyup',function(e){
  s2Text.after(e.keyCode);
});