AI solution for JavaScript Quiz on BFE.dev
32. Hoisting IIII
The code outputs:
function
number
number
string
number
Explanation:
-
The variable
a
is declared with a value of1
, but then a function with the same name is also declared. In JavaScript, functions take precedence over variables with the same name, sotypeof a
returns"function"
. -
The variable
b
is declared, and then a function with the same name is also declared. However, the function is then assigned a value of1
. Therefore,typeof b
returns"number"
. -
The variable
c
is declared as a function and then later assigned a value of1
. Therefore,typeof c
returns"number"
. -
The variable
d
is declared with a value of1
. Then, a self-invoking anonymous function is defined that changes the value ofd
to'2'
and also declares a function with the same name. However, since the function is defined within the scope of the anonymous function andd
is changed to a string before the function is called,typeof d
returns"string"
. -
The variable
e
is declared with a value of1
. Then, a constant functionf
is defined with the same name as the variablee
. However, sincef
is a function expression and not a function declaration, it does not affect the scope ofe
. Therefore,typeof e
returns"number"
.