classList.item(index);// Returns item in list by its index, or undefined if index >=list's length
classList.contains(token); // Returns true if list contains token, otherwise false.
classList.add(token1[, ...tokenN]); // Adds token to the list.
classList.remove(token1[, ...tokenN]); // Removes the token from the list.
classList.replace(oldToken, newToken); // Replaces token with newToken.
classList.supports(token); // Returns true if token is in associated attribute's supported tokens.
classList.toggle(token[, force]); // Removes token if it exists, or adds to list if it doesn't. Returns a boolean true if conteined, false otherwise.
classList.entries(); // Returns an iterator through all key/value pairs contained in this object.
classList.forEach(callback[ ,thisArg]); // Executes a provided callback function once per DOMTokenList element.
classList.keys(); // Returns an iterator through all keys of the key/value pairs contained in this object.
classList.values(); // Returns an iterator through all values of the key/value pairs contained in this object.