<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("#btn1").click(function(){
$("body").append($("#p1").detach());
});
$("#btn2").click(function(){
$("body").append($("#p2").remove());
});
$("p").click(function(){
$(this).animate({fontSize: "+=1px"})
});
});
</script>
</head>
<body>
<p id="p1">Click this paragraph after it is moved - it keeps its click event.</p>
<p id="p2">Click this paragraph after it is moved - it does not keeps its click event.</p>
<button id="btn1">Detach and append p element</button>
<button id="btn2">Remove and append p element</button>
</body>
</html>