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.
习近平总书记指出：“中国式现代化的新征程上，每一个人都是主角，每一份付出都弥足珍贵，每一束光芒都熠熠生辉。”无论故乡还是他乡，无论近前还是远方，无数人一针一线的穿梭，正是新时代中国生长的模样。
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