JSFiddle - React, Tailwind, and code Playground

HTML

<select id="one" onchange="reset()">
  <option></option>
  <option>Coffee</option>
  <option>Tea</option>
  <option>Espresso</option>
</select>
<select id="two">
  <option></option>
  <option>Milk</option>
  <option>Sugar</option>
  <option>Water</option>
</select>

JavaScript

function reset() {
 var dd = document.getElementById('two');
 dd.value = 0;
}