I am trying to retrieve a date but I am struggling with the month because January = 0 instead of 1. I need to retrieve items which occured after today -60 days.

var today = new Date(); if (today.getMonth() < 1) {     var numberOfDaysLastMonth = getDaysInMonth(12, today.getFullYear()-1);    //number of days in december last year     var numberOfDaysThisMonth = getDaysInMonth(today.getMonth()+1, today.getFullYear());  //number of days this month } else {     var numberOfDaysLastMonth = getDaysInMonth(today.getMonth(), today.getFullYear());    //number of days last month     var numberOfDaysThisMonth = getDaysInMonth(today.getMonth()+1, today.getFullYear());  //number of days this month };  var startDate = new Date(); var myMonth; var myYear;  if (today.getMonth() < 1) {     myMonth = today.getMonth() + 1;     myYear = today.getFullYear()-1; } else {     myMonth = startDate.getMonth()-1;     myYear = today.getFullYear(); };  startDate  = myYear+"-"+myMonth+"-"+startDate.getDate();  // returns last month 

Is there a more simple (and working) way to do this?

Regards Marco