<h3>演示如何创建 BLOCKQUOTE 元素</h3>
<p>请点击按钮来创建 BLOCKQUOTE 元素,此引用的来源是 worldwildlife.org。</p>
<button onclick="myFunction()">试一下</button>
var x = document.createElement("BLOCKQUOTE");
var t = document.createTextNode("For 50 years, WWF has been protecting the future of nature.");
x.setAttribute("cite", "http://www.worldwildlife.org/who/index.html");
document.body.appendChild(x);