JSFiddle - React, Tailwind, and code Playground

HTML

<select id='list'>
    <option value='1'>First</option>
    <option value='2'>Second</option>
    <option value='3'>Third </option>
</select> 
<input type ="text" id="text"/>

JavaScript

$('#text').val($('option:selected').text());
$('#list').change(function(){

        $('#text').val($('option:selected').text());
})