题解 | #Array.map#
Array.map
https://www.nowcoder.com/practice/8300c998180c4ebbbd2a5aaeb7fbc77c
// Fn大小写
{"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 if (typeof Fn !== 'function') return\n let arr = this\n let arrar = new Array\n for (let i = 0; i < arr.length; i++) {\n arrar.push(Fn(this[i], i, this))\n\n }\n return arrar\n}\n\n </script>\n</body>\n\n</html>","css":"","js":""}
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