Understanding the .constructor property on JavaScript Objects

JavaScript

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Constructor functions hold an interesting purpose in JavaScript. Unlike in classical languages, they do not always mean created by. In this lesson we’ll use the new keyword to make a constructor call and work with the .constructor property.

Juan Jose

~ 6 years ago

Hi , In the last code, the last line console.log(a.constructor === Object ) // true should be // false. Amazing video!.

Brendan Whiting

~ 6 years ago

I don't understand where it says that console.log(Foo.prototype.constructor) prints [λ: Foo]. I'm using this playground and it prints function Foo() {}. Where does that lamdba symbol come from?

Jake

~ 6 years ago

Don't understand...

David Choi

~ 6 years ago

Tyler your last example uses Object.defineProperty to reset Foo.prototype's constructor to an anonymous object. And yet when you later call console.log(a.constructor === Foo) it returns true. Why is it Foo and not Object if I created an anonymous object?