Angular 2声明对象数组 [英] Angular 2 declaring an array of objects

问题描述

我有以下表达式:

public mySentences:Array<string> = [
    {id: 1, text: 'Sentence 1'},
    {id: 2, text: 'Sentence 2'},
    {id: 3, text: 'Sentence 3'},
    {id: 4, text: 'Sentenc4 '},
];

这不起作用，因为我的数组不是string类型，而是包含对象列表.我怎样才能delcare我的数组以包含对象列表?

which is not working because my array is not of type string rather contains a list of objects. How I can delcare my array to contain a list of objects?

*没有新的组件，它声明了一个似乎很浪费的句子类

*without a new component which declaring the a class for sentence which seem a waste

推荐答案

我假设您正在使用打字稿.

I assume you're using typescript.

要格外小心，您可以将type定义为需要与某些接口匹配的对象数组:

To be extra cautious you can define your type as an array of objects that need to match certain interface:

type MyArrayType = Array<{id: number, text: string}>;

const arr: MyArrayType = [
    {id: 1, text: 'Sentence 1'},
    {id: 2, text: 'Sentence 2'},
    {id: 3, text: 'Sentence 3'},
    {id: 4, text: 'Sentenc4 '},
];

或者没有定义自定义类型的简短语法:

Or short syntax without defining a custom type:

const arr: Array<{id: number, text: string}> = [...];

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