How to inherit static methods from base class in JavaScript?

Question

I\'m trying to achieve some basic OOP in JavaScript with the prototype way of inheritance. However, I find no way to inherit static members (methods) from the base class.

Answer 1

For ES5 you will need to use Object.assign to copy static methods from BaseClass to SubClass but for ES6 it should work without using Object.assign

ES5 Example

var BaseClass = function(){

}

BaseClass.sayHi = function(){
   console.log("Hi!");
}

var SubClass = function(){

}

Object.assign(SubClass , BaseClass);

BaseClass.sayHi();   //Hi
SubClass.sayHi(); //Hi

ES6 Example

class BaseClass {
   static sayHi(){
     console.log("Hi!");
   }
}

class SubClass extends BaseClass{

}

BaseClass.sayHi()   //Hi
SubClass.sayHi() //Hi