Optimized eventlistener for multiple nodes

By putting the eventlistener on the parent and then within find out which child node that was clicked the JS doesn’t get slow by creating loads of eventlisteners when 1 is enough.

  containerNode.addEventListener("click", function(event){
    event.preventDefault();
    var clickedChildNode = event.target.nodeName == "li" ? event.target : event.target.firstElementChild;
    console.log(clickedChildNode);
  });