Question

基本上，我想做的是从静态类获取值。像这样：

export enum Test {
    A = 10,
    B = 20,
    C = 30

}

export class TestObject
{
    constructor(public ValueA: string, public ValueB: Date){}
}

export class TestValues {
    [key: number] : TestObject;
    public static 10: TestObject = new TestObject ('AAA', new Date());
    public static 20: TestObject = new TestObject ('BBB', new Date());
    public static 30: TestObject = new TestObject ('CCC', new Date());
}

var a = Test.A as number;
var result = TestValues[a];

这将返回错误：

Element implicitly has an 'any' type because
type 'typeof TestValues' has no index signature.

请参见打字稿游乐场HERE

Answer 1

好的，所以我不再通过输出静态类来解决它。我将其设置为普通类，并将其实例化并导出为常量。

答案：

export enum Test {
    A = 10,
    B = 20,
    C = 30

}

export class TestObject
{
    constructor(public ValueA: string, public ValueB: Date){}
}

class TestValuesDefinition {
    [key: number] : TestObject;
    public 10: TestObject = new TestObject ('AAA', new Date());
    public 20: TestObject = new TestObject ('BBB', new Date());
    public 30: TestObject = new TestObject ('CCC', new Date());
}

export const TestValues = new TestValuesDefinition();

// And than in the other file
var a = Test.A;
var result = TestValues[a];

静态类的TypeScript索引器

1 个答案: