typescript - 如何使用 Typescript 定义对象数组？

Question

谁能给我一些建议。我这里有一组对象:

contentOrderBy = [
    { id: 0, name: 'CId', key: 'contentId' },
    { id: 1, name: 'Modified By', key: 'modifiedBy' },
    { id: 2, name: 'Modified Date', key: 'modified' },
    { id: 3, name: 'Status', key: 'contentStatusId' },
];

我想做的是找到如何在 Typescript 中定义它。

Answer 1

不太清楚你的意思:

What I would like to do is to find how I can define this in Typescript.

但一种选择是引入接口(interface)并将变量声明为此类对象的数组:

interface IMyEntity {
    id: number;
    name: string;
    key: string;    
}

var contentOrderBy = [
    { id: 0, name: 'CId', key: 'contentId' },
    { id: 1, name: 'Modified By', key: 'modifiedBy' },
    { id: 2, name: 'Modified Date', key: 'modified' },
    { id: 3, name: 'Status', key: 'contentStatusId' },
];

// finally here we have declaration of the array
// which contains the items of specified type/interface
// and we can later work with them "fully-typed"
var myContent : IMyEntity[] = contentOrderBy;

alert(myContent[0].name);

查一下in action here