xxxxxxxxxx<html manifest="demo_html.appcache"><head> <meta charset="UTF-8"><title>W3Cschool(w3cschool.cn)</title> </head><body><script src="/statics/demosource/demo_time.js"></script><p id="timePara"><button onclick="getDateTime()">获取日期和时间</button></p><p><img src="/statics/images/w3c/logo.png" width="247" height="48"></p><p>尝试打开 <a href="/statics/demosource/tryhtml5_html_manifest.htm" target="_blank">这个页面</a>, 在离线的状态下重新载入这个页面，页面也可以访问。</p></body></html>