Timing en console.log in javascript

https://gathering.tweakers.net/forum/list_messages/2106312

by Rob Janssen

HTML

<ul>
  <li id="list-item-1" data-field="1">Click me</li>
</ul>

JavaScript

$(document).ready(function() {
  memoryElement = document.getElementById("list-item-1");
  memoryElement.addEventListener("click", checkNumber);
});

function checkNumber(event) {
  console.log(event.target);
  event.target.classList.toggle("clicked");
  console.log(event.target);
}