If date selected in a Date field is earlier or equal to 90 days populate another field using jQuery

Question

I am trying to set jQuery to allow me to populate a secondary field on a form based on the date that is selected on a calendar.

If date selected in a Date field is earlier or equal to 90 days populate another field

I have tried to have a look through some of the articles on the site but cant find anything that matches this requirement there are some calendar or data picker queries but nothing with a less than or equal to which populates an additional field.

Any help would be great, Thanks

Does this help? [compare two dates with JavaScript](https://stackoverflow.com/questions/492994/compare-two-dates-with-javascript) — freedomn-m, Jun 30 '21 at 09:32

score 0 · Answer 1 · answered Jun 30 '21 at 16:15

Is this what you are trying to achieve?

$('#myDate').change(checkdate)

function checkdate() {
  let date90daysAgo = new Date();
  date90daysAgo.setDate(date90daysAgo.getDate() - 90);
  var selectedDate = $('#myDate').val().split(/\D/);
  selectedDate = new Date(selectedDate[0], --selectedDate[1], selectedDate[2]);
  if(date90daysAgo >= selectedDate) {
    $('#answer').text("yes");
  } else {
    $('#answer').text("no");
  }
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input id="myDate" type="date"></input>
<p>Is the date more than 90 days ago?<p>
<p id="answer"></p>

If date selected in a Date field is earlier or equal to 90 days populate another field using jQuery

1 Answers1