title: How to make a div using loop in JavaScript?
body: <p>I have to make a div triangle like this, with looping in JavaScript. Anyone know how to make this?</p>
  
  <p>*Input using <code>&lt;select&gt;</code> tag. Thanks!</p>
  
  <p><img src="https://i.stack.imgur.com/XOaER.jpg" alt="Open Image"></p>