如何获取数组项的类型? [英] How to get type of array items?

问题描述

如果我有一个类型 type foo = Array<{ name: string;测试:数量；}>，是否可以获取数组中值的类型，在本例中为接口.我知道有 keyof 可以获取密钥，值是否有类似的东西?

If I have a type type foo = Array<{ name: string; test: number; }>, would it be possible to get the type of the values within the array, in this case, the interface. I know there is keyof to get the keys, is there something similar for values?

推荐答案

如果您正在寻找如何提取 { name: string;测试:数量；} 类型，您可以简单地为索引项"创建别名:

If you're looking to how to extract { name: string; test: number; } type, you can simply create alias to "item at index":

type Foo = Array<{ name: string; test: number; }>;
type FooItem = Foo[0];

或

type FooItem = Foo[number];

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