题解 | #文件扩展名#
文件扩展名
https://www.nowcoder.com/practice/01ca4c6aa14249c2911f89baba9dc023
{"css":"","js":"","html":"<!DOCTYPE html>\n<html lang=\"en\">\n <head>\n <meta charset=\"UTF-8\">\n </head>\n <body>\n \n <script>\n const _getExFilename = (filename) => {\n // 补全代码\n let reg = /\\.\\w+/;\n let result = filename.match(reg)[0];\n return result\n }\n </script>\n </body>\n</html>","libs":[]}
使用正则条件快速匹配，match方法获取结果
