How to get year/month/day from a date object?

var dateObj = new Date();
var month = dateObj.getUTCMonth() + 1; //months from 1-12
var day = dateObj.getUTCDate();
var year = dateObj.getUTCFullYear();

newdate = year + "/" + month + "/" + day;

or you can set new date and give the above values

new Date().toISOString()
"2016-02-18T23:59:48.039Z"
new Date().toISOString().split('T')[0];
"2016-02-18"
new Date().toISOString().replace('-', '/').split('T')[0].replace('-', '/');
"2016/02/18"

new Date().toLocaleString().split(',')[0]
"2/18/2016"

var dt = new Date();

dt.getFullYear() + "/" + (dt.getMonth() + 1) + "/" + dt.getDate();

Since month index are 0 based you have to increment it by 1.

Edit

For a complete list of date object functions see

Date

getMonth()

Returns the month (0-11) in the specified date according to local time.

getUTCMonth()

Returns the month (0-11) in the specified date according to universal time.