​x
 
<!DOCTYPE html>
<html>
<head>
<script src="/jquery/jquery.min.js"></script>
​
</head>
<body>
​
<h1>设置 HTML</h1>
​
<div id="01">
  <h2>Hello China!</h2>
</div>
<div id="02">
  <h2>Hello World!</h2>
</div>
​
<p id="demo"></p>
​
<script>
$(document).ready(function() {
  var myElement = $("#02");
  myElement.html("<h2>Hello Shanghai!</h2>");
});
</script>
​
</body>
</html>
​