题解 | #实现new操作符#
实现new操作符
https://www.nowcoder.com/practice/71c2aff7cb6641099aa17d56157a91b9
{"html":"<!DOCTYPE html>\n<html>\n <head>\n <meta charset=utf-8>\n </head>\n <body>\n \t\n <script type=\"text/javascript\">\n const _new = function() {\n // 补全代码\n const obj = {};\n const fn = [].shift.call(arguments);\n\n if(typeof fn.prototype === 'object') {\n obj.__proto__ = fn.prototype;\n }\n\n const res = fn.apply(obj, [...arguments]);\n\n return typeof res === 'object' ? res : obj;\n }\n </script>\n </body>\n</html>","css":"","js":""}
