JavaScript onClick addClass

Question

I am kind of confused why my code doesn\'t work correctly, I hope You will tell me what I\'ve done wrong. I want to highlight navigation tab while clicked.

HTML:

Answer 1

var list = document.querySelector('ul');
list.addEventListener('click', function(ev) {
  if (ev.target.tagName === 'LI') {
    ev.target.classList.toggle('checked');
  }
}, false);