Description: Returns whether event.stopPropagation() was ever called on this event object.
<!DOCTYPE html>
<html>
<head>
<script src="https://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<script>$("p").click(function(event){
alert( event.isPropagationStopped() );
event.stopPropagation();
alert( event.isPropagationStopped() );
}); </script>
</body>
</html>