jQuery, attribute filter selectors and finding out exactly _which_ element was clicked

$("li[id^='shop_id']").click( function () {

  alert("I clicked on id ??");

 });

$("li[id^='shop_id']").click( function () {
    var current_id = $(this).attr("id");
    alert(current_id);
});

<script type="text/javascript">
  $("li[id^='shop)id']").click(function(){
    alert($(this).attr('id'));
  });
</script>