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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>

<script id="jsbin-javascript">
'use strict';

var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; desc = parent = getter = undefined; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };

function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

var Human = function Human() {
  var _this = this;

  _classCallCheck(this, Human);

  this.gender = 'male';

  this.printGender = function () {
    console.log(_this.gender);
  };
};

var Person = (function (_Human) {
  _inherits(Person, _Human);

  function Person() {
    var _this2 = this;

    _classCallCheck(this, Person);

    _get(Object.getPrototypeOf(Person.prototype), 'constructor', this).apply(this, arguments);

    this.name = 'Brix';

    this.printMyName = function () {
      console.log(_this2.name);
    };
  }

  return Person;
})(Human);

var person = new Person();
person.printMyName();
person.printGender();
</script>


<script id="jsbin-source-javascript" type="text/javascript">class Human {
  gender = 'male';

  printGender = () => {
    console.log(this.gender);
  }
}

class Person extends Human {
   name = 'Brix';


  printMyName = () => {
    console.log(this.name);
  }
}

const person = new Person();
person.printMyName();
person.printGender();</script></body>
</html>