modern time of hash tag - fundamentals

function modernTimesOfHashTag(str) {
  str = str.split(' ');
  for (const currentWord of str) {
    if (currentWord[0] === '#' && currentWord.length > 1) {
      let isValid = false;
      let currentWordArray = currentWord.slice(1).split('');
      currentWordArray.every(char => {
        if ((char.charCodeAt(0) >= 65 && char.charCodeAt(0) <= 90) || (char.charCodeAt(0) >= 97 && char.charCodeAt(0) <= 122)) {
          return isValid = true;
        } else {
          return isValid = false;
        }
      });
      if (isValid) {
        console.log(currentWord.slice(1));
      }
    }
  }
}