JSFiddle - React, Tailwind, and code Playground

HTML

<input class='checkboxstatus' data-def='0' type="checkbox" />

JavaScript

$('.checkboxstatus').click(function(){
    if(checkboxChangedFromOriginal($(this))) {
        alert('checkbox has changed from original value');
    }
 });

function checkboxChangedFromOriginal(checkbox) {
 return (checkbox.is(':checked') && checkbox.attr('data-def') == '0') ||
     (!checkbox.is(':checked') && checkbox.attr('data-def') == '1');  
}