Find first day of previous month in javascript

Question

Given a date object, how to get its previous month\'s first day in javascript

Answer 1

It will help to get the previous month first and last date.

    function getLastMonth(){
        var now = new Date();
        var lastday  = new Date(now.getFullYear(), now.getMonth(), 0);
        var firstday = new Date(lastday.getFullYear(), lastday.getMonth(), 1);
        var lastMonth = firstday.getDate()+'/'+(firstday.getMonth()+1)+'/'+firstday.getFullYear()+' - '+lastday.getDate()+'/'+(firstday.getMonth()+1)+'/'+lastday.getFullYear();
        return lastMonth;
    }