See what I’m getting at? JavaScript code is fundamentally a “userland” thing. The code you ship is accessible to the user to modify and fuck about with however they wish.
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 Version/17.0 Safari/605.1.15",，更多细节参见WPS官方版本下载
В Финляндии предупредили об опасном шаге ЕС против России09:28，详情可参考91视频
// 注意：slice(0, 负数)会返回空字符串，需兼容（比如stack长度<k时，slice后为空）