AI 编程工具xxxxxxxxxx<html><head><meta charset="utf-8"><title>高手教程(study.p2hp.com)</title><script src="https://cdn.staticfile.net/jquery/1.10.2/jquery.min.js"></script></head><body> <script>$(function () { function funcontain( html ){ document.body.innerHTML += "<br>" + html; } funcontain($.contains( document.documentElement, document.body )); // true funcontain($.contains( document.body, document.documentElement )); // false})</script> </body></html>