​x
 
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
</head>
<body>
​
<h2>Set HTML</h2>
​
<div id="01"><p>Hello World!</p></div>
<div id="02"><p>Hello Sweden!</p></div>
​
<script>
$(document).ready(function() {
  var content = $("#02").html();
  $("#01").html(content);
});
</script>
​
</body>
</html>
​