Answer & Solution
Answer: Option B
Solution:
The output will be 120 because 'var' declarations are function-scoped and the inner 'var e' re-declares and reassigns the outer variable.
Q
What will be the output of the following code: var e = 110; if (true) { var e = 120; } console.log(e);
Related Questions on Average
Which keyword is used for declaring variables that should not change?
A). var
B). let
C). const
D). all of the above
What will be the output of the following code: const d = 90; d = 100; console.log(d);
A). 90
B). 100
C). Error
D). undefined
What will be the output of the following code: console.log(a); var a = 50;
A). 50
B). undefined
C). Error
D). null
Can you re-declare a variable using 'const' in the same scope?
A). Yes
B). No
C). Only in functions
D). Only in loops
How does 'let' differ from 'var' in terms of scope?
A). No difference
B). Function-scoped
C). Block-scoped
D). Global-scoped
Which keyword allows block-scoped variable declaration?
A). var
B). let
C). const
D). Both B and C
What will be the output of the following code: let c = 70; { let c = 80; console.log(c); } console.log(c);
A). 70 80 80
B). 80 80
C). Error
D). 70 80
How do 'var' declarations handle hoisting?
A). They are not hoisted
B). Only the assignment is hoisted
C). Only the declaration is hoisted
D). Both declaration and assignment are hoisted
What will be the output of the following code: if (true) { let b = 60; } console.log(b);
A). 60
B). undefined
C). Error
D). null
What is the scope of a variable declared with 'let' inside a loop?
A). Global
B). Function
C). Loop block
D). Entire script