Calculate days between dates in LiveCycle Designer

Question

I have seen and read a number of comments regarding calculating the days between dates, as it relates to JS. My question is-I need to calculate this information in Adobe LiveCycle Designer. I have the two fields I need to reference in the script. The first is the static field with the last known date of an event, the second is the current date/time (which is entered by the end user). I need to know how to write the script to find the difference between these two fields, with the calculation resulting in days. I do not need to be exact, daylight savings time, leap year, time zones etc. are not important. Just need to get to an integer. Thanks in advance for the help.

Answer 1

The quick and dirty way to do it involves an epoch subtraction. In Javascript, the date epoch is available from Date.getTime(); as seen on W3 Schools . If you're looking for a more robust approach and if you have a need for additional date and time operation, I would suggest looking into Moment.js . Moment.js is technically a JavaScript library aimed at browsers, etc. but it can be wrapped in a Script Object to be used in an XFA form .