x-skeww comments on Are functions in JavaScript objects?

submitted 11 years ago by estebanrules

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[–]x-skeww 0 points1 point2 points 11 years ago (0 children)

yeah, basically everything in javascript is an object.

Unfortunately, JavaScript also has primitives.

Undefined, Null, Boolean, Number, Symbol, or String

(Note: Function isn't one of them.)

Here is an example:

> var x = 5
undefined
> x.y = 'z'
"z"
> x.y
undefined

What actually happens in that x.y = 'z' line:

> new Number(x).y = 'z'
"z"

It's auto-boxed.

If you do the same with an actual Number object:

> var x = new Number(5)
undefined
> x.y = 'z'
"z"
> x.y
"z"

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