For a Date object named myDate, use the following syntax:
var myDate = new Date()
var currSecs = myDate.getUTCSeconds()
For ranges 0 to 9, only 1 digit is returned. If you want to place a leading zero in front of the digit i.e. 01 to 09 seconds, do the following:
if (currSecs < 10)
{
currSecs = "0" + currSecs)
}