title: Can I change the number of days in a month based on the month?
body: <p>I'm creating a form, and I want it to ask the person their full birthday.  I'm collecting the day, month, and year in which they were born.  I have 2 questions:</p>
  
  <ol>
  <li><p>Can I make it so if they select February as their birth month, it'll show 29 days in the "days" select box, but if they select March, it will show 31 days in the "days" select box.</p></li>
  <li><p>I have an alert box which shows them their information before submitting it.  Right now it tells them, <em>Date of Birth: Month/Day/Year</em> (for example: <em>12/6/1970</em>).  Is there a code that would allow me to make it so it says, <em>Age: {Age}</em> (for example: <em>Age: 34 years old</em>).</p></li>
  </ol>
  
  <p>Thanks!</p>