JSFiddle - React, Tailwind, and code Playground

HTML

<select id='list'>
  <option value='1/3'>1</option>
  <option value='2/3'>2</option>
  <option value='3/3'>3</option>
</select>
<select id='list1'>
  <option value='1/4'>4</option>
  <option value='2/4'>5</option>
  <option value='3/4'>6</option>
</select>
<div>
</div>

JavaScript

$("select").change(function(){
var str = $("#list").val();
var str1 = $("#list1").val();

});

$("div").html(str + " " + str1);