objects_inheritance created by ValentynaGorbachenko - https://repl.it/CcaY/9

objects_inheritance.js

//Objects
var literalObject = {
  name: "literalObject",
  property1: "some data", //string
  property2: 3, // number
  property3: [], //array
  property4: {},
  method1: function(){
    var result = [];
    for (var prop in this) {
      if( this.hasOwnProperty( prop ) ) {
      result.push(this.name+"." + prop + " = " + this[prop]);
      }
    }
    return result.join(",\n");
  },
  method2: function(){ //function
    return console.log("This object \'"+this.name + "\' has such own proprties and methods: \n" + this.method1());
  }
}
//Calling the method 
literalObject.method2();

//Parent class
function Parent(v1,v2){
  this.val0 = 0;
  this.val1 = v1;
  this.val2 = v2;
}

//Inheriting from the literalObject
Parent.prototype = literalObject;

//Child class
function Child(v3, v4){
  this.val3 =  v3;
  this.val4 = v4;
  this.meth5 = function(){ return this.val0;};
}

//or we can type this line insead of line 38: this.meth5 = ...
//Child.prototype.meth5 = function(){ return this.val0; };

//creating an instance obj1 of a Child class that doesn't have access to the Parent and objectLiteral
var obj1 = new Child(33, 44);

//Establishing the inheritance between Child and Parent and literalObject as well
Child.prototype = new Parent();

//creating instances obj2 and obj3 of a Child class that have access to the Parent and literalObject properties and methods
var obj2 = new Child(3,4);
//adding own property name
obj2.name = "obj2";

var obj3 = new Child(333, 444);
//adding own property name
obj3.name = "obj3";
console.log("Calling the method2 on obj2 and obj3 that belongs to the literalObject")
obj2.method2();
obj3.method2();
console.log("The instance obj1 of the Child class doesn't have access to the Parent as well as to the literalObject");
console.log("obj1.meth5() is "+obj1.meth5()+'\n'+"obj1.property1 is "+obj1.property1+'\n'+ "obj1.val3 is "+obj1.val3);
console.log("Instances obj2 and obj3 of the Child class have access to the Parent")
console.log("obj2.meth5() is "+obj2.meth5()+'\n'+"obj2.val0 is "+obj2.val0+'\n'+"obj2.property1 is "+obj2.property1);
console.log("obj3.meth5() is "+obj3.meth5()+'\n'+"obj3.property1 is "+obj3.property1);