如何在 TypeScript 接口中定义字符串数组？

Question

I have an object like this:

{
  "address": ["line1", "line2", "line3"]
}

How to define address in an interface? the number of elements in the array is not fixed.

Answer 1

interface Addressable {
  address: string[];
}

Answer 2

An array is a special type of data type which can store multiple values of different data types sequentially using a special syntax.

TypeScript supports arrays, similar to JavaScript. There are two ways to declare an array:

1. Using square brackets. This method is similar to how you would declare arrays in JavaScript.

let fruits: string[] = ['Apple', 'Orange', 'Banana'];

2. Using a generic array type, Array.

let fruits: Array<string> = ['Apple', 'Orange', 'Banana'];

Both methods produce the same output.

Of course, you can always initialize an array like shown below, but you will not get the advantage of TypeScript's type system.

let arr = [1, 3, 'Apple', 'Orange', 'Banana', true, false];

Source

Answer 3

这很简单：

address: string[]

Answer 4

或者：

{ address: Array<string> }

Answer 5

我认为最好的方法是： type yourtype = { [key: string]: string[] }

Answer 6

This is the answer I came here for:

enum Lines {
  "line1",
  "line2",
  "line3",
}

interface Addressable {
   address: keyof typeof Lines;
}

Answer 7

Here is how the cool kids do it nowadays.

export type stringArray = [string][number][];

Explanation:

[string] creates a tuple of string

[number] cast the tuple into a string

[] declares it as an array

For non believers, here is the proof:

Answer 8

Very simple method:

interface IQuestion {
 question: string[];
 testCase: number[];
}