Constructor of the object created using Object.create(someprototype) in javascript

Question

Objects created using Object.create(someObj.prototype) has it's constructor as someObj, then how come when I try to access the properties of someObj, then it gives as undefined?

function foo(){
    this.name1 = "Name";
    this.otherName1 = "someOtherName";
}

var fooObj = new foo();
console.log(fooObj.name1); // Name

var barObj = Object.create(foo.prototype);

console.log(barObj.constructor);  
   //Outouts: 
  // function foo(){
 //    this.name1 = "Name";                                                                                                         

 //      this.otherName1 = "someOtherName" ;
//    }


//Then why not able to access this?
console.log(barObj.name1); Outputs; // undefined

Answer 1

It's simply because you haven't called the constructor yet.

Consider the following:

barObj.constructor(); // <--- this will call the constructor function and set this.name1 and this.otherName1
console.log(barObj.name1); // Outputs: "Name"

Answer 2

Here barObj is just an object linked to foo prototype object.Object.create won't call foo function until you call it explicitly. See below code.

foo.call(barObj) will call foo function with barObj as it's context. Means this in foo function refers to barObj.

function foo(){
    this.name1 = "Name";
    this.otherName1 = "someOtherName";
}

var fooObj = new foo();
//console.log(fooObj); // Name

var barObj = Object.create(foo.prototype);
foo.call(barObj)

//Outouts: 
// function foo(){
//  this.name1 = "Name";                                                                                                         

//  this.otherName1 = "someOtherName" ;
//}


//Then why not able to access this?
console.log(barObj.name1);