在 for 循环中加载函数 - 变量 functionname[variable]

Question

是否可以将函数命名为数组 [x]？

我正在寻找一种在 for 循环中加载不同函数的解决方案。我会像这个函数名一样声明函数。然后我将使用数组 = ["name", ...]; 在 foo 循环中调用函数；

function functionname["aaa"]() {

console.log("is for aaa");

}

array = ["aaa", "bbb", "ccc"];

for (var i = 0; i < array.length; i++) {

functionname[array[i]]();

}

Answer 1

因此，如果我理解正确的话，您想遍历一个函数数组，调用数组中位于循环中当前迭代索引处的函数。我不知道你的目标是什么，但这是一种可能的解决方案，尽管有几种方法可以解决这个问题：const aaa = () => console.log('aaa');const bbb = () => console.log('bbb');const ccc = () => console.log('ccc');const array = [aaa, bbb, ccc];for (var i = 0; i < array.length; i++) {&nbsp; array[i]();}

Answer 2

您可以创建函数查找表。let functionname = {&nbsp; &nbsp; "aaa": () => {&nbsp; &nbsp; &nbsp; &nbsp; console.log("is for aaa")&nbsp; &nbsp; },&nbsp; &nbsp; "bbb": () => {&nbsp; &nbsp; &nbsp; &nbsp; console.log("is for bbb")&nbsp; &nbsp; }};没有箭头函数：var functionname = {&nbsp; &nbsp; "aaa": function aaa() {&nbsp; &nbsp; &nbsp; &nbsp; console.log("is for aaa");&nbsp; &nbsp; },&nbsp; &nbsp; "bbb": function bbb() {&nbsp; &nbsp; &nbsp; &nbsp; console.log("is for bbb");&nbsp; &nbsp; }};

Answer 3

您可以将函数分配为对象的成员：let myObj = {&nbsp; &nbsp; "aaa": function () {&nbsp; &nbsp; &nbsp; &nbsp; console.log("is for aaa");&nbsp; &nbsp; },&nbsp; &nbsp; "bbb": function () {&nbsp; &nbsp; &nbsp; &nbsp; console.log("is for bbb");&nbsp; &nbsp; }};myObj["ccc"] = function () {&nbsp; &nbsp; &nbsp; &nbsp; console.log("is for ccc");&nbsp; &nbsp; };array = ["aaa", "bbb", "ccc"];for (var i = 0; i < array.length; i++) {&nbsp; &nbsp; myObj[array[i]]();}