Why foo.bar not return a number

#1

foo.bar =1 so why it doesnt return a number.

#2

@joshiajay311 what you are doing here is passing an object in function and calling it,

(function(foo){ return typeof foo.bar; })({ foo: { bar: 1 } });

here

{ foo:{ bar: 1 }}

is the foo parameter in function, thus foo has a property foo which again has a property bar thus first foo doesn’t have bar property, hence undefined
Try running this, and check the output

(function(foo){ return typeof foo.foo.bar; })({ foo: { bar: 1 } });
#3

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