JSFiddle - React, Tailwind, and code Playground
HTML
<b> <input type="checkbox" id="chkSelect" /> Check/Uncheck me </b>
<br/><br/>
<input type="button" id="btnStatus" value="Get Checkbox status" />
CSS
body {font-family:Arial; font-size:10pt;}
JavaScript
$(document).ready(function() {
$('#btnStatus').click(function(){
var isChecked = $('#chkSelect').attr('checked');
alert(isChecked);
});
});