es6 - classes - 7.js

es6 - classes - 7.js

var es5_Person = function (firstname, lastname) {
    this.firstname = firstname;
    this.lastname = lastname;
}
var john = new es5_Person('John', 'Doe');
es5_Person.prototype.greet = function () {
    console.log('Hello I am ' + this.firstname + ' ' + this.lastname);
}
var es5_Soldier = function (firstname, lastname, weapon) {
    // call person object with current this context
    es5_Person.call(this, firstname, lastname);
    this.weapon = weapon;
}