02. Format the Text

function formattheText() {
  const textAll = document.getElementById('input').textContent;
  let titleArr = textAll.split('. ');
  titleArr[titleArr.length - 1] = titleArr[titleArr.length - 1].slice(0, -1);
  titleArr = titleArr.map((x) => `${x}.`);

  for (let i = 0; i < Math.ceil(titleArr.length / 3) ; i++) {
    const p = document.createElement('p');
    p.textContent = titleArr.slice(i * 3, i * 3 + 3).join(' ');
    if (p.textContent.length > 0) {
      document.getElementById('output').appendChild(p);
    }
  }
}