Tryit Editor v1.8

Source Code:

<!DOCTYPE html>
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js">
</script>
<script>
$(document).ready(function(){
  $("p").on("myOwnEvent", function(event, showName){
    $(this).text(showName + "! What a beautiful name!").show();
  });
  $("button").click(function(){
    $("p").trigger("myOwnEvent",["Anja"]);
  });
});
</script> 
</head>
<body>

<button>Trigger custom event</button>
<p>Click the button to attach a customized event on this p element.</p>

</body>
</html>

Result:

W3Schools.com - Try it yourself

Edit the code above and click "Submit Code" to see the result.