en.javascript.info/2-ui/3-event-details/3-mousemove-mouseover-mouseout-mouseenter-mouseleave/mouseoverout-child.view/script.js

function mouselog(event) {
  let d = new Date();
  text.value += `${d.getHours()}:${d.getMinutes()}:${d.getSeconds()} | ${event.type} [target: ${event.target.id}]\n`.replace(/(:|^)(\d\D)/, '$10$2');
  text.scrollTop = text.scrollHeight;
}