I want to create my own form plugin.I get undefined is not a function error when I add jquery datepicker to _header.php file in impresspages.
<link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
Html
<div class="row">
<div class="col-md-12">
<form role="form" action="roomjack/create_customer" method="POST" accept-charset="utf-8">
<div class="form-group">
<label for="in">Check In Date :</label>
<input type="text" id="in" class="datepicker form-control">
</div>
<div class="form-group">
<label for="out">Check Out Date:</label>
<input type="text" id="out" class="datepicker form-control">
</div>
<button type="submit" class="btn btn-default">Book Now</button>
</form>
</div>
</div>
And here's my script in _footer.php
<script>
$(document).ready(function(){
$( ".datepicker" ).datepicker();
});
</script>