jquery onclick detect id value

Hi, I am trying to for example alert a popup if and id has a value. so far the code does a popup with the id value and and blank popup if it has no value.  I want to make sure there is not popup if there is no id value.

 $(document).ready(function () {
         $("a").click(function () {
            
             if ($('a').val) {
                 alert(this.id);
             }
             else {
                 'nothing happen'
             }
           
     });
     });

 <a href="#" id="33" class="ui-link-inherit" >link1</a>

 <a href="#" id="34" class="ui-link-inherit" >link2</a>

 <a href="#"  class="ui-link-inherit" >link no id1</a>

 <a href="#"  class="ui-link-inherit" >link no id2</a>

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