Want to implement virtual functions in typescript

Cocos Creator
1

hi,
i want to know how to implement virtual functions in cocos creator - typescript. so basically when i call a virtual function of the base class it should execute the function with the same signature in the derived class (if it overrides the method in the base class) . i also want to be able to call the base class function from the derived class e.g.

super.SetUI();

or

base.SetUI();

thank you!

2

There is no concept of virtual function in typescript, TS uses “prototype chain” to achieve similar goal, as long as there is a method with the same signature in the derived class, it will overwrite the method in the base class. for example:

class TestBase {
    SetUI (): void {
         // do some thing
    }
}

class TestDerived extends TestBase  {
    SetUI (): void {
       super.SetUI(); // invoke the method of base class
       // do some thing customized
    }
}