undefined | Better HN

0 pointsgavinray5y ago0 comments

A JS integer is actually an instance of the "Number" object, you can to a small degree alter fundamental behavior even with primitive types

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jiofih5y ago

No it is not. It is a primitive, this difference is well defined in the ECMAScript spec. Same for strings. An instanceof String is strictly not the same as a string primitive (and there are runtime consequences).

_v7gu5y ago

You need to enclose numbers to access the prototype: 1.toString is undefined, whereas (1).toString() is "1"

hosh5y ago

I stand corrected.

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jiofih5y ago

_v7gu5y ago

You need to enclose numbers to access the prototype: 1.toString is undefined, whereas (1).toString() is "1"

hosh5y ago

I stand corrected.

j / k navigate · click thread line to collapse