Format the Text JS Advanced

function solve() {
  let text = document.getElementById('input').value;
  let output = document.getElementById('output');

  let arr = text.split('.').filter(s => s !== '');

  while (arr.length > 0) {
    let paragraphText = arr.splice(0, 3).join('. ') + '.';
    let paragraph = document.createElement('p');
    paragraph.textContent = paragraphText;
    output.appendChild(paragraph);
  }
}