title: Check Date greater than 30 days from today's date
body: <p>I am using jQuery datepicker and tried to find out difference between todays date and selected date , but getting issues... rather than issues... I was not able to find it perfectly... </p>
  
  <p>I tried to do this on 'onSelect event of datepicker '</p>
  
  <p>Question:
  How to check whether selected Date using jQuery Datepicjer is greater than 30 days from todays date ?</p>
  
  <p>Any help will be appreciated....!!
  note: dont want to use any libraries, I need to solve this by using only jQuery.</p>