Answers for "get previous month and year in javascript"

get last day of month javascript

var today = new Date();
var lastDayOfMonth = new Date(today.getFullYear(), today.getMonth()+1, 0);

get previous year in javascript

const currentYear = new Date().getFullYear(); // 2020

const previousYear =  currentYear-1;

console.log(previousYear); // 2019