题解 | #Array.map#
Array.map
https://www.nowcoder.com/practice/8300c998180c4ebbbd2a5aaeb7fbc77c
{"html":"<!DOCTYPE html>\n<html>\n\n<head>\n <meta charset=\"UTF-8\">\n <style>\n /* 填写样式 */\n </style>\n</head>\n\n<body>\n <!-- 填写标签 -->\n <script type=\"text/javascript\">\n // \n Array.prototype._map = function(Fn) {\n const self = this;\n const res = [];\n const context = arguments[1];\n if(!Array.isArray(self)) {\n return ;\n }\n for(let i=0;i<self.length;i++) {\n res.push(Fn.call(context, self[i], i, self))\n }\n\n return res;\n }\n\n </script>\n</body>\n\n</html>","css":"","js":""}
