​x
 
<!DOCTYPE html>
<html>
<body>
​
<h1>通过标签名查找 HTML 元素</h1>
​
<p>Hello World!</p>
<p>Hello China!</p>
<p>Hello Shanghai!</p>
​
<p id="demo"></p>
​
<script>
var myElements = document.getElementsByTagName("p");
document.getElementById("demo").innerHTML = "第三段中的文本是：" + myElements[2].innerHTML;
</script>
​
</body>
</html>
​