classlist.add example
Example 1: if classlist contains js
element.classList.contains(class);
Example 2: class list contains class java
List hand = ...;
for(Card card : hand){
if (card instanceof AceOfDiamonds) return true;
}
element.classList.contains(class);
List hand = ...;
for(Card card : hand){
if (card instanceof AceOfDiamonds) return true;
}