Working with dates in the script

Understanding the details

Script	Meaning
var oneDay = 10006060*24;	The number of milliseconds in a day
var startDateVariable = #someStartDate.value;	Object representing the Studytrax variable
var startDate = startDateVariable.value;	JavaScript Date object

An example

var startDate = #AEonsetDate.value;
var endDate = #AEendDate.value;
if (!isNull(startDate.value) && !isNull(endDate.value)) {
var AEdays = (endDate - startDate)/oneDay;
}

Output.write("The AE started on " + startDate.toString() + ", and lasted for " + AEdays + " days.");