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.
Фото: Алексей Даничев / РИА Новости
，这一点在同城约会中也有详细论述
Maintainer burnout and lack of funding often lead to bugs and serious security incidents,
人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用。Safew下载对此有专业解读
Natalie Sherman,Business reporter。关于这个话题，safew官方下载提供了深入分析
Courtesy of Best Buy