This is a well-known browser security technique. In JavaScript, calling .toString() on a native browser function returns "function appendBuffer() { [native code] }". Calling it on a JavaScript function returns the actual source code. So if your appendBuffer has been monkey-patched, .toString() will betray you; it’ll return the attacker’s JavaScript source instead of the expected native code string.
到1988年，为了服务新兴的Sun City West分区，Sun Health基金会捐赠900万美元，建成了Del E. Webb Memorial Hospital（现名Banner Del E. Webb Medical Center），同样以老年护理为核心，和第一家医院形成互补，覆盖更多退休居民。，推荐阅读51吃瓜获取更多信息
Sign up for a 30-day trial of Amazon Prime (if you're not already a member)。业内人士推荐雷电模拟器官方版本下载作为进阶阅读
FT Edit: Access on iOS and web，详情可参考搜狗输入法下载