<!DOCTYPE html>
<html>
<body>
<p>Hello World!</p>
<p>DOM 很有用！</p>
<p>本例演示 <b>getElementsByTagName</b> 方法。</p>
<script>
x=document.getElementsByTagName("p");
document.write("第一段的文本: " + x[0].innerHTML);
</script>
</body>
</html>