Date.hourDiff()
The Date.hourDiff() API returns the difference between two date, time, or timestamp fields in hours.
Parameters
Date/time 1
Date/time 2
Return Value
Number of hours between the two dates/times
Example
pjs.define("time", { type: 'time', initValue: '12:00:00'});
pjs.define("time1", { type: 'time', initValue: '22:00:00'});
pjs.define("diff", { type: 'integer'} );
diff = Date.hourDiff(time1,time);
return diff;
// 10
RPG Equivalent
%DIFF()