William Harwood
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.
，详情可参考搜狗输入法2026
英國超市將巧克力鎖進防盜盒阻止「訂單式」偷竊
Фото: Valentyn Ogirenko / Reuters