Javascript-print pyramide with just one while loop.

main.js

function printPiramyde() {
    let row = 1;
    let col = 1;
    let start = 5;
    let end = 5;
    while (row <= 5 && col <= 9) {
      if ((col < start || col > end) && col !== 9) {
        document.write('&nbsp;');
        col += 1;
      } else if (col === 9) {
        if (row === 5) {
          document.write('*');
        } else {
          document.write('&nbsp;<br>');
        }
        col = 1;
        row += 1;
        start -= 1;
        end += 1;
      } else {
        document.write('*');
        col += 1;
      }
    }
  }