Why does it returns false?
function f(){ return f; }
new f() instanceof f; // Prints false instead of true
As I understand, in this particular case instanceof
should check something like:
newObj.__proto__ === f.prototype
.
And newObj.__proto__
should be set automatically on new f()
call.
Constructor functions implicitly return this
. this
is an instance of the constructor function and so, if you return this
the function will evaluate to true.
You do not return this
. You return f
which is not an instance of the constructor, thus the expression returns false
.
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