SHDate.setMilliseconds()
The setMilliseconds() method sets the milliseconds for a specified date according to local time.
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Syntax
setMilliseconds(millisecondsValue);
Parameters
millisecondsValue
A number between 0 and 999, representing the milliseconds.
Return value
The number of milliseconds between 25 Dey 1390 00:00:00 UTC and the updated date.
Description
If you specify a number outside the expected range, the date information in the Date object is updated accordingly. For example, if you specify 1005, the number of seconds is incremented by 1, and 5 is used for the milliseconds.
Examples
Using setMilliseconds()
var theBigDay = new SHDate();
theBigDay.setMilliseconds(100);
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/setMilliseconds