prototype_create.js

// prototypal inheritance 'create' (utility) meathod
create: function(values) {
  var instance = Object.create(this); //Object.create only in > IE8, so this can be done is only >IE8
  Object.keys(values).forEach(function(key)) {
    instance[key] = values[key];
  }
  return instance;
}
  
// Use it like this
var baseClass = {
  value: "init value",
  create: function(values) {
    var instance = Object.create(this); //Object.create only in > IE8, so this can be done is only >IE8
    Object.keys(values).forEach(function(key)) {
      instance[key] = values[key];
    }
    return instance;
  }
};

var childClass = baseClass.create({ 
  someValue: "some value", 
  someFunction: function() {
    console.log(this.someValue);
  }
});

childClass.value; //init value 
childClass.someValue //some value

// we can also create subclass of childClass with all properties of all parent class ans so on.