SImple christmas tree in JS

I’m trying to make a trunk for this christmas tree. I want to use if so it can be with only one loop as in code. Any ideas how to do it? Thanks.

function Tree() {
    const star = "*";
    for (let i = 1; i <= 6; i++) {
      document.write(`${star.repeat(i)}<br/>`);
    }
  }

  Tree();