text: const checkForSpam = str => {
    str = str.toLowerCase();
    if (str.includes("spam") || str.includes("sale")) {
      return true;
    }
    return false;
  };
  console.log(checkForSpam("Latest technology news"));
  console.log(checkForSpam("JavaScript weekly newsletter"));
  console.log(checkForSpam("Get best sale offers now!"));
  console.log(checkForSpam("[SPAM] How to earn fast money?"));
  