JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-2.2.3.min.js"></script>
<input type="checkbox" name="is_chosen[]" value="1" class="flat">
<input type="checkbox" name="is_chosen[]" value="2" class="flat">
<input type="checkbox" name="is_chosen[]" value="3" class="flat">

JavaScript

setInterval(function(){
$('input:checkbox').each(function () {
  $(this).attr('checked', !this.checked);
});
},1000);