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代码编辑器：
<!DOCTYPE html> <meta charset="utf-8"> <link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/> <script src="/static/js/loadxmldoc.js"></script> <script> xmlDoc=loadXMLDoc("/static/media/dom/books_comment.xml"); x=xmlDoc.getElementsByTagName("book")[0].childNodes; for (i=0;i<x.length;i++) { if (x[i].nodeType==8) { //Process only comment nodes x[i].insertData(25,"Italian "); document.write(x[i].data); document.write("<br>"); } } </script> <footer>简单教程，简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
运行结果：