用文本替换整数

Question

我有一个代码：

var number = 0;
var friends = ["Marta", "Anna", "Sara"];

number.replace("Marta", 0);
number.replace("Anna", 1);
number.replace("Sara", 2);

number = prompt("Hey! What Iker's friend do you want to see today?") - 1;

document.write(friends[number]);

我要用文字“ Marta”，“ Anna”和“ Sara”代替它们各自的编号。我知道我在这里设置的方法不正确。

任何人都有正确的密码吗？谢谢。

Answer 1

在尝试按索引访问值时，不需要替换

var friends = ["Marta", "Anna", "Sara"];

let number = prompt("Hey! What Iker's friend do you want to see today?") - 1;

document.write(friends[number] || 'Not in friends list :(');

而且Number也没有替换方法String具有

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更新：我可以在提示（）上替换一个字符串吗？像“玛塔”（Marta）到1？

var friendsArr = ["Marta", "Anna", "Sara"];
var friendsObj = {"Marta":1, "Anna":2, "Sara":3};

let input = prompt("Hey! What Iker's friend do you want to see today?")

let op = parseInt(input) ? friendsArr[input] : friendsObj[input] 

document.write(op || 'Not in friends list :(');