JavaScript closure closure

* Implement function Makeclosures, after the call satisfies the following conditions:
1. Returns a function array result with the same length as arr
2. Run the first function in result, i.e. result[i] (), the result is the same as FN (Arr[i])

Input

[1, 2, 3], function (x) {return x * x;}

function Makeclosures (arr, fn) {    var result = [];        for (var i = 0; i < arr.length; i++) {        (function (i) {            Result.push (function () {                return fn (Arr[i]);            });        }) (i);    }        return result;} var arr = [1, 2, 3];var fn = function (x) {return x * x;} var result = Makeclosures (arr, FN); Console.log (result);  [F,f, F, F]console.log (Result[1] ());   4console.log (FN (arr[1]));   4

　　

The known function fn execution requires 3 parameters. Implement the partial function, which satisfies the following conditions:
1. Returns a function result, which takes a parameter
2. Execution result (STR3), the returned result is consistent with FN (STR1, str2, STR3)

Input:var sayit = function (greeting, name, punctuation) {return greeting + ', ' + name + (Punctuation | | ‘!‘);  }; Partial (sayit, ' Hello ', ' Ellie ') ('!!! ');

Output:hello, Ellie!!!

function partial (FN, str1, str2) {return function (STR3) {return fn (str1, str2, STR3);}} var sayit = function (greeting, name, punctuation) {return greeting + ', ' + name + (Punctuation | | ‘!‘);}; Console.log (Partial (sayit, ' Hello ', ' Ellie ') ('!!! '));

　　

　　

JavaScript closure closure