JSFiddle - React, Tailwind, and code Playground

by j08691

HTML

<select id='purpose'>
    <option value="0">Personal use</option>
    <option value="1">Business use</option>
    <option value="2">Passing on to a client</option>
</select>
<div style='display:none;' id='business'>Business Name
    <br/>&nbsp;
    <br/>&nbsp;
    <input type='text' class='text' name='business' value size='20' />
    <br/>
</div>

JavaScript

$('#purpose').on('change', function () {
    $("#business").css('display', (this.value == '1') ? 'block' : 'none');
});