Question

I have 3 date / time input boxes on a form and the user cannot select any times within half an hour of each other.

I’ve converted all values to epoch format using a Javascript implementation of strtotime, but not sure how to recursively check that any of the times are actually half an hour apart.

I can hand code all checks, but it would be cleaner to write a recursive function (especially if there were theoretically more than 3 time slots).

Did some Google research but no luck.

Any suggestions on implementing this in Javascript or Jquery.

Thanks.

Answer 1

Sort the times, then look at adjacent members and check whether they’re within 30 minutes (1800 seconds) of each other.

EDIT: I hesitate to bother posting example code at all, but if your times are in an array named times:

times.sort();
for (i = 0; i < times.length-1, i++) {
  if (times[i+1] - times[i] < 1800) {
    return false;
  }
  return true;
}