代码示例:(标识:eg_js_jquery_settext)
<!DOCTYPE html>
<html>
<head>
<script src="/jquery/jquery.min.js"></script>
</head>
<body>

<h1>设置文本内容</h1>

<h2 id="01">Hello China!</h2>
<h2 id="02">Hello World!</h2>

<script>
$(document).ready(function() {
  var myElement = $("#02");
  myElement.text("Hello Shanghai!");
});
</script>

</body>
</html>
运行结果: