How do these make any sense?

Hello @Anindya.

I don’t know where you got that and what you are up to . Be careful about how you use `isNaN`

like that. There is `isNaN`

and `Number.isNaN`

. This is what the folks at MDN say about `isNaN`

. The very first paragraph.

The

`isNaN()`

function determines whether a value is`NaN`

or not. Note, coercion inside the`isNaN`

function has interesting rules; you may alternatively want to use`Number.isNaN()`

, as defined in ECMAScript 2015.

Check more below:

type coercion

an empty object can’t be coerced to a number, so it gives NaN

an empty array is coerced to 0, which is a number

true coerced to a number is 1, so sum three of them to get 3

last one is equality, with type coercion included

That explains it! if I say true === 1 it outputs false. I’ll go ahead and do some studying on type coercion :3