​x
 
<!DOCTYPE html>
<html>
<head>
<script src="/jquery/jquery.min.js"></script>
</head>
<body>
​
<h1>通过 Query 选择器查找 HTML 元素</h1>
​
<p class="intro">Hello World!</p>
<p class="intro">Hello China!</p>
<p class="intro">Hello Shanghai!</p>
​
<p id="demo"></p>
​
<script>
$(document).ready(function() {
  var myElements = $("p.intro");
  $("#demo").text("类名为 intro 的第三段文本是：" + myElements[2].innerHTML);
});
</script>
​
</body>
</html>
​