element classlist contains code example

Example 1: class list contains class java

List<Card> hand = ...;
for(Card card : hand){
  if (card instanceof AceOfDiamonds) return true;
}

Example 2: classlist.contain in javascript

let span = document.querySelector("span");
let classes = span.classList;
let result = classes.contains("d");
if (result) {
  span.textContent = "The classList contains 'c'";
} else {
   span.textContent = "The classList does not contain 'c'";
}