CODE EXAMPLE FOR JAVASCRIPT

get first and last date of month in javascript

const firstDay = new Date(now.getFullYear(), now.getMonth(), 1);
console.log(firstDay); // Sat Oct 01 2022 ...

const lastDay = new Date(now.getFullYear(), now.getMonth() + 1, 0);
console.log(lastDay); // Mon Oct 31 2022 ...