CODEWITHSUNDEEP
javascript
zilcuanu
zilcuanu

Reputation: 3715

function prototype in javascript

I have a function which I am using as a constructor. When I assign a function to it prototype and invoke the function, I only see the value x and not the testMethod which I augmented. I was expecting the augmented function also to be printed when i refer to the this. Is my understanding correct. 

function Test(x){
 this.x=x;
}

Test.prototype.testMethod=function(){
  console.log(this);
}

var t= new Test(5);
t.testMethod();

Upvotes: 0

Views: 53

Answers (1)

Tushar
Tushar

Reputation: 87203

Because function testMethod() is in the prototype, you cannot see it in the console. It is hidden in the __proto__ property.

If you expand __proto__ in your console, you'll see it.

enter image description here

Upvotes: 2

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