Use JavaScript to auto populate a date field based on another date field

Let's say a user opens a page with a form on it.  He clicks a box to add a date to a form field.  I want another form field to automatically populate with a date 10 days from the date that was just entered.  As a bonus, if it could automatically check if that new date fell on a Sat/Sun and if it did choose the date for the following Monday that would be very helpful. Thank you.
Jason92sAsked:
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tdlewisConnect With a Mentor Commented:
Here's a function that accepts a date string as input and returns a date string that is 10 days later (except weekends):
function laterDate(when)
{
  var d = new Date
  d.setTime(Date.parse(when) + 10 * 24 * 60 * 60 * 1000)
  if (d.getDay() == 6) d.setTime(d.getTime() + 24 * 60 * 60 * 1000)
  if (d.getDay() == 0) d.setTime(d.getTime() + 24 * 60 * 60 * 1000)
  var str = d.toLocaleDateString()
  return str
}

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Jason92sAuthor Commented:
Thank you.
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