A ES6 demonstration of how to call static method in non-static class method

static-method-demo.js

class DummyParent {
  static hello() {
    console.log('dummy parent say hello')
  }
}

class Dummy extends DummyParent {
  static foo() {
    console.log('dummy say foo')
  }

  /**
   * Demonstrate how to call static method
   * in ordinary method.
   */
  sayHello() {
    // Calling static method of this class.
    this.constructor.foo()

    // Calling static method of its parent class.
    this.constructor.hello()

    // Say something anyway.
    console.log('dummy say hello')
  }
}

const d = new Dummy();

// Calling an ordinary method.
d.sayHello()

// Calling the static class of parent method
// by the children class.
Dummy.hello()