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.
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。关于这个话题，safew官方下载提供了深入分析
回顾过往，教训犹在。有的地方和部门好大喜功、贪大求全、盲目跟风、华而不实，打造“政绩工程”“形象工程”，最终留下来的往往是“烂摊子”。这严重挫伤干部群众的信心，甚至贻误宝贵的发展时机。
Initially Squire was ecstatic, expecting they could access a digitised customer list. But Harp broke the news that the sales records were just a "pile of notes" that went back decades.
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