<!DOCTYPE html>
<html>
<head>
<script src="https://libs.baidu.com/jquery/2.1.4/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>