从静态类访问派生类属性

Question

I have this example use-case where I want to access MyOtherClass.property1 from within a static method of the derived class, but assuming I don't know the derived class name, I only know that it has this particular property.

For a standard class instance invoked with new keyword I am able to use new.target .

Is there some sort of an equivalent for static?

class MyClass{
    static method1(){
        // I want to access MyOtherClass.property1 here 
    }
}

class MyOtherClass extends MyClass{
    static method2(){

    }
}

MyOtherClass.property1 = 1;
MyOtherClass.method1();

Answer 1

The prototype of MyOtherClass points to MyClass so it should already be in the prototype chain allowing you to access it directly. Then use this to access the calling context which should point to MyOtherClass since you are calling it with MyOtherClass.method1() :

 class MyClass{ static method1(){ console.log("method1", this.property1) } } class MyOtherClass extends MyClass{ static method2(){ console.log(method2) } } MyOtherClass.property1 = 1; MyOtherClass.method1()