How do I create an object inside the same class, new this ()?

• 0
  Good afternoon, I still have a habit from other languages ​​that I can do it like this:
  

  class A  {
    constructor() {
      this.test = Math.random();
    }
    instance() {
      return new this();
    }
  }
  class B extends A {}
  
  const b = new B(); // b.test = 0.3213123213154353
  const c = b.instance(); // c.test = 0.43234871231123

  
  
  But this does not work in js, I know what can be created if you specify the class name - return new A (); , but I need polymorphic behavior.
  
  Please tell me how to implement this?

  JavaScript Claire Nicholson, Sep 10, 2019

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1 Answers
• 0
  return new this.constructor ();
  
  
  
  ??

  Rose Suarez

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