FED8. Array.filter
描述
请补全JavaScript代码，要求实现Array.filter函数的功能且该新函数命名为"_filter"。示例1
输入:
[1,2]._filter(i => i>1)
输出:
[2]
HTML/CSS/JavaScript 解法, 执行用时: 1683ms, 内存消耗: 77804KB, 提交时间: 2022-02-09
{"css":"","js":"","html":"<!DOCTYPE html>\n<html>\n <head>\n <meta charset=utf-8>\n </head>\n <body>\n\n <script type=\"text/javascript\">\n // 补全代码\n // arr.filter((item) => )\n Array.prototype._filter = function (fn) {\n if (typeof fn !== 'function') {\n throw new TypeError('should be function')\n }\n let array = this\n let len = array.length\n let res = []\n for (let i = 0; i < len; i++) {\n let isTrue = fn.call(arguments[1], array[i], i, array)\n if (isTrue) {\n res.push(array[i])\n }\n }\n return res\n }\n </script>\n </body>\n</html>","libs":[]}
HTML/CSS/JavaScript 解法, 执行用时: 1684ms, 内存消耗: 77816KB, 提交时间: 2022-02-09
{"css":"","js":"","html":"<!DOCTYPE html>\n<html>\n <head>\n <meta charset=utf-8>\n </head>\n <body>\n\n <script type=\"text/javascript\">\n // 补全代码\n Array.prototype._filter = function(fn) {\n if(typeof fn !== 'function') {\n return\n }\n const array = this\n const newArray = []\n for(let i = 0 ; i < array.length ; i++) {\n let result = fn.call(arguments[1],array[i],i,array)\n result && newArray.push(array[i])\n }\n return newArray\n }\n </script>\n </body>\n</html>","libs":[]}
HTML/CSS/JavaScript 解法, 执行用时: 1739ms, 内存消耗: 77808KB, 提交时间: 2021-12-05
{"css":"","js":"","html":"<!DOCTYPE html>\n<html>\n <head>\n <meta charset=utf-8>\n </head>\n <body>\n\n <script type=\"text/javascript\">\n // 补全代码\n Array.prototype._filter = function(fn){\n let newArr = [];\n this.forEach(item => {\n if(fn(item)){\n newArr.push(item);\n }\n })\n return newArr;\n }\n console.log([1,2]._filter(i => i>1));\n </script>\n </body>\n</html>","libs":[]}
HTML/CSS/JavaScript 解法, 执行用时: 1740ms, 内存消耗: 77772KB, 提交时间: 2021-12-08
{"css":"","js":"","html":"<!DOCTYPE html>\n<html>\n <head>\n <meta charset=utf-8>\n </head>\n <body>\n\n <script type=\"text/javascript\">\n // 补全代码\n Array.prototype._filter=function(fun){\n let result=[];\n this.forEach((ele)=>{\n if(fun(ele)){\n result.push(ele)\n }\n })\n return result\n }\n \n </script>\n </body>\n</html>","libs":[]}
HTML/CSS/JavaScript 解法, 执行用时: 1741ms, 内存消耗: 77776KB, 提交时间: 2022-01-25
{"css":"","js":"","html":"<!DOCTYPE html>\n<html>\n <head>\n <meta charset=utf-8>\n </head>\n <body>\n\n <script type=\"text/javascript\">\n // 补全代码\n Array.prototype._filter = function(fn){\n let arr = []\n this.forEach(item=>{\n if(fn(item)){\n arr.push(item)\n }\n })\n return arr\n }\n </script>\n </body>\n</html>","libs":[]}