Random color on hover

gistfile1.js

color_classes = ['green','purple','violet','teal','pink'];
(function() {
  const initLinks = function() {
    const div = document.querySelector('#mydiv');
    console.log(div)
    div.addEventListener('mouseover',function(){
      color_classes.forEach(color =>{
        div.classList.remove(color);
      });
      div.classList.add(randomFrom(color_classes));
    });
  };
  const randomFrom = function(array) {
    return array[Math.floor(Math.random() * array.length)];
  }
  initLinks();
})();