Question

Does anyone know of any existing solutions using javascript that can parse a crontab and return all datetime instances between a given start and end date?

ie if i have 0 * * * *, start 24/10/2011 16:00 and end 24/10/2011 19:00 then it will return:

24/10/2011 16:00,
24/10/2011 17:00,
24/10/2011 18:00

Answer 1

You might want to check out Later.js which can parse a Cron expression and calculate the next occurrences.

var schedule = cronParser().parse('* */5 * * * *', true);
var results = later(60).get(schedule, 100, startDate, endDate);