when append to add elements , class in elements is not working

<script type="text/javascript">
$( document ).ready(function() {
$('#click').click(function (){
   $('.products').append('<input type="checkbox" class="location-items" name="vehicle1" value="Bike">');
});

$('.location-items').click(function (){
   if($(this).is(':checked')){ 
     alert('Not working');
   }
});
});
</script>

when I click checkbox is not alert