JSFiddle - React, Tailwind, and code Playground

HTML

<html>
  <body>
    <select id='a_drop_down_box'>
        <option value='1'>One</option>
        <option value='2' selected='selected'>Two</option>
        <option value='3'>Three</option>
    </select>
    <p id='message'></p>
   
  </body>
</html>

JavaScript

var test = document.getElementById("a_drop_down_box");
  var value= test.options[test.selectedIndex].value;
alert(value);

  var test = document.getElementById("a_drop_down_box");
  var value= test.options[test.selectedIndex].text;
alert(value);