typescript - 属性 'runStaticMethod' 是 'DemoClass' 类型的静态成员

Question

构建以下 typescript 代码时出现以下错误。

Property 'runStaticMethod' is a static member of type 'DemoClass'

typescript 代码:

export class Main {
    constructor(private demo: DemoClass) { }
    public run() {
        this.demo.runStaticMethod();
    }
}

export class DemoClass {
    public static runStaticMethod() {
        console.log('run...');
    }
}

new Main(DemoClass).run();

我收到以下信息 console构建上述内容时出错 typescript代码。但是javascript代码按预期运行。

控制台错误:

Chitty:tsc NatarajanG$ tsc
src/index.ts:5:19 - error TS2576: Property 'runStaticMethod' is a static member of type 'DemoClass'

5         this.demo.runStaticMethod();
                    ~~~~~~~~~~~~~~~

Chitty:tsc NatarajanG$ 

Answer 1

因为它是一个静态属性，您应该按照 TS 要求的方式访问它:DemoClass.runStaticMethod() , 尽管 javascript 支持 this.demo.runStaticMethod() .

https://www.typescriptlang.org/docs/handbook/classes.html#static-properties

Each instance accesses this value through prepending the name of the class. Similarly to prepending this. in front of instance accesses, here we prepend Grid. in front of static accesses.