getSeconds Method
Returns the seconds value in a Date object using local time.
function getSeconds() : Number
Remarks
To get the seconds value using Coordinated Universal Time (UTC), use the getUTCSeconds method.
The getSeconds method returns an integer between 0 and 59 indicating the second's value of the indicated Date object. A zero is returned in two situations. One occurs when the time is less than one second into the current minute. The other occurs when the time was not stored in the Date object when the object was created. The only way to determine which situation you have is to also check the hours and minutes for zero values. If they are all zeroes, it is nearly certain that the time was not stored in the Date object.
Example
The following example illustrates the use of the getSeconds method.
function TimeDemo(){
var d, s = "The current local time is: ";
var c = ":";
d = new Date();
s += d.getHours() + c;
s += d.getMinutes() + c;
s += d.getSeconds() + c;
s += d.getMilliseconds();
return(s);
}