W3School TIY Editor
W3School 在线教程
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暗黑模式
运行代码
<html> <head> <script type="text/javascript" src="/example/xdom/loadxmldoc.js"> </script> </head> <body> <script type="text/javascript"> xmlDoc=loadXMLDoc("/example/xdom/books_ns.xml"); x=xmlDoc.getElementsByTagName("title")[0]; ns="https://www.w3school.org.cn/children/"; document.write(x.hasAttributeNS(ns,"lang")); </script> </body> </html>