JSFiddle - React, Tailwind, and code Playground

by Vaniljs

HTML

<div class="block">
  <select>
    <option>1</option>
    <option>2</option>
    <option>3</option>
  </select>
</div>

<button>Add select</button>

JavaScript

const btnAddSelect = document.querySelector('button');
const block = document.querySelector('.block');

btnAddSelect.addEventListener('click', () => {
    block.innerHTML += '<select>\n' +
        '    <option>1</option>\n' +
        '    <option>2</option>\n' +
        '    <option>3</option>\n' +
        '  </select>'
});