JSFiddle - React, Tailwind, and code Playground

by brigand

HTML

<select name="" id="myselect" multiple>
  <option value="foo">foo</option>
  <option value="bar">bar</option>
  <option value="baz">baz</option>
</select>
<pre id="out"></pre>

JavaScript

Array.from(myselect.children, (x, i) => {
	if (i !== 1) {
		x.selected = true;
  }
});

out.textContent = Array.from(myselect.selectedOptions, x => x.value).join(', ');