Calling a class method from the constructor
<p>I'm getting an error when calling a class method from its constructor. Is it possible to call a method from the constructor? I tried calling the base class method from the constructor of a derived class but I am still getting an error.</p>

<pre><code>'use strict';

class Base {
    constructor() {
        this.val = 10;
        init();
    }

    init() {
        console.log('this.val = ' + this.val);
    }
};

class Derived extends Base {
    constructor() {
        super();
    }
};

var d = new Derived();
</code></pre>

<blockquote>
  <p>➜  js_programs node class1.js
  /media/vi/DATA/programs/web/js/js_programs/class1.js:7
          init();
          ^</p>
  
  <p>ReferenceError: init is not defined
      at Derived.Base (/media/vi/DATA/programs/web/js/js_programs/class1.js:7:9)
      at Derived (/media/vi/DATA/programs/web/js/js_programs/class1.js:18:14)
      at Object. (/media/vi/DATA/programs/web/js/js_programs/class1.js:23:9)
      at Module._compile (module.js:435:26)
      at Object.Module._extensions..js (module.js:442:10)
      at Module.load (module.js:356:32)
      at Function.Module._load (module.js:311:12)
      at Function.Module.runMain (module.js:467:10)
      at startup (node.js:136:18)
      at node.js:963:3 ➜  js_programs</p>
</blockquote>