writable: false means no code can reassign window.Audio to a different value. configurable: false means no code can even call Object.defineProperty again to change those settings. If fermaw’s initialisation code tried to restore the original Audio constructor (a perfectly sensible defensive move) the browser would either fail or throw a TypeError. The hook was permanent for the lifetime of the page.
（二）违反国家规定，对计算机信息系统功能进行删除、修改、增加、干扰的；
。业内人士推荐下载安装汽水音乐作为进阶阅读
Not the day you're after? Here's the solution to yesterday's Connections.
Using a Web API from JavaScript is as simple as this: