var op = document.getElementById('op'),

    btn = document.getElementById('reset');

​

document.addEventListener('keydown', function (e) {

  op.innerHTML += '<p>KEYDOWN</p>';

  console.log(e.keyCode);

}, false);

​

document.addEventListener('keypress', function (e) {

  op.innerHTML += '<p>KEYPRESS</p>';

  console.log(e.keyCode);

}, false);

​

btn.addEventListener('click', function () {

  op.innerHTML = '';

  console.clear();

}, false);