ลองตัวเอง - jQuery event

<!DOCTYPE html>
<html>
<head>
<script src="/lib/jquery-1.12.2.min.js"></script>
<script>
$(document).ready(function(){
   $("p").on("click", function(){
   $(this).css("background-color", "pink");
   });
   $("button").click(function(){
   $("p").off("click");
   });
});
</script>
</head>
<body>

<p>Click this paragraph to change its background color.</p>
<p>Click the button below and then click on this paragraph (the click event is removed).</p>

<button>Remove the click event handler</button>

</body>
</html>