javascriptdate

How to add months to a date in JavaScript?

I want to add months to a date in JavaScript.

For example: I am inserting date 06/01/2011 (format mm/dd/yyyy) and now I want to add 8 months to this date. I want the result to be 02/01/2012.

So when adding months, the year may also increase.

Solution

  • No date mutatation:

    With this code, the date variable won't be changed when creating newDate.

    var date = new Date();
console.log(date);

var newDate = new Date(new Date(date).setMonth(date.getMonth() + 8));
console.log(newDate);

    Corrected as of 25.06.2019:

    var date = new Date();
console.log(date);

var newDate = new Date(date.setMonth(date.getMonth() + 8));
console.log(newDate);

    Old From here:

    var jan312009 = new Date(2009, 0, 31);
var eightMonthsFromJan312009  = new Date(jan312009.setMonth(jan312009.getMonth()+8));