Boolean

The Boolean constructor creates Boolean objects (not to be confused with Boolean primitives). The Boolean objects are not that useful and are listed here for the sake of completeness.

> var b = new Boolean();
> b.valueOf();
false
> b.toString();
"false"

A Boolean object is not the same as a Boolean primitive value. As you know, all objects are truthy:

> b === false;
false
> typeof b;
"object"

Boolean objects don't have any properties other than the ones inherited from Object.