javascript-typeof-instanceof/

[utterances-bot]

Type checking in JavaScript: typeof and instanceof operators

How to perform type checking in JavaScript using typeof and instanceof operators.

https://dmitripavlutin.com/javascript-typeof-instanceof/

[Dimasprog]

Quiz: What is the built-in constructor for which instanceof for any object returns true?

Default constructor

[panzerdp]

Quiz: What is the built-in constructor for which instanceof for any object returns true?

Default constructor

Nope. :)

[RolandDreger]

new Boolean() instanceof Object // true new String() instanceof Object // true new Number() instanceof Object // true Object(Symbol()) instanceof Object // true ;) new Date() instanceof Object // true [] instanceof Object // true (() => {}) instanceof Object // true

[panzerdp]

new Boolean() instanceof Object // true new String() instanceof Object // true new Number() instanceof Object // true Object(Symbol()) instanceof Object // true ;) new Date() instanceof Object // true [] instanceof Object // true (() => {}) instanceof Object // true

Exactly!