All about Date

Get the time now using Date() constructor:

const now = new Date();
// Mon Oct 31 2022 21:36:51 GMT+0800 (Singapore Standard Time)

Get Month and Year:

now.getFullYear(); // 2022
now.getMonth(); // 10

Get First Day of Current Month

const first_day_of_curr_mth = new Date(now.getFullYear(), now.getMonth(), 1);
// Sat Oct 01 2022 00:00:00 GMT+0800 (Singapore Standard Time)

Get Last Day of Current Month

const last_day_of_curr_mth = new Date(now.getFullYear(), now.getMonth() + 1, 0);
// Mon Oct 31 2022 00:00:00 GMT+0800 (Singapore Standard Time)