<!doctype html>
<html>
<head>
<script src="js/jquery/1.11.3/jquery.min.js"></script>
</head>
<body>
<div id="id-div-1">div 1</div>
<div id="id-div-2">div 2</div>
<div id="id-div-3">div 3</div>
<script>
$( "#id-div-2" ).replaceWith( "<h3>Hi</h3>" );
/*
run:
div 1
Hi
div 3
*/
</script>
</body>
</html>