Result Size: 625 x 534
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<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.4.1.min.js"></script>
</head>
<body>
<h1>获取文本内容</h1>
<h2 id="01">Hello World!</h2>
<h2 id="02">Hello Sweden!</h2>
<h2 id="03">Hello Japan!</h2>
<p id="demo"></p>
<script>
$(document).ready(function() {
  var myElement = $("#02");
  var myText = myElement.text();
  $("#demo").text(myText); 
});
</script>
</body>
</html>