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  <h2> <code>download</code> 属性与 `Data URI` + `JavaScript` 让用户下载自定义HTML</h2>

  <p>在文本框中输入一些HTML,然后使用“Download HTML”链接下载您刚刚创建的内容。然后可以在系统上查看HTML文件。它使用了download属性,以及一个数据URI和一些JavaScript来完成这项工作。</p>
  <textarea id="txt" cols="60" rows="7"><body><p>一些HTML内容</p></body></textarea>
  <p><a href="nothing.html" id="link" download="code.html">作为HTML下载</a></p>



                body {
  font-family: Arial, sans-serif;
  font-size: 20px;
  padding: 0 20px;

main {
  text-align: center;
  margin: 0 auto;
  max-width: 800px;

p {
  text-align: left;
  padding: 0 20px;

p:last-of-type {
  text-align: center;

code {
  color: firebrick;


                function downloadCode(link, code) {
  link.href = 'data:text/html;charset=utf-8,' + code;

document.getElementById('link').addEventListener('click', function () {
  downloadCode(this, txt.value);
}, false);