JSFiddle - React, Tailwind, and code Playground
HTML
<input id="enable" type="checkbox" /> Enable
<br/>
<select id="type_select" disabled="true">
<option value="">Please select...</option>
<option value="1">Something 1</option>
</select>
JavaScript
var $checkbox = $('#enable'),
$select = $('#type_select');
$checkbox.change(function(e) {
$select.prop('disabled', !$checkbox.is(':checked'))
});