AI solution for JavaScript Quiz on BFE.dev
64. reference type

The code outputs:

BFE
BFE
BFE

In the first and second invocations, obj.foo() and (obj.foo)(), this refers to the obj object and this.msg returns the value of the msg property, which is 'BFE'.

In the third invocation, (obj.foo || obj.bar)(), this is determined by how the function is called. Since it is invoked as a function expression, this inside the function will refer to the global window object in non-strict mode or undefined in strict mode. However, since the foo method exists on the obj object, the foo method is invoked. So the output is the same as the first two invocations: 'BFE'.