Answer & Solution
Answer: Option A
Solution:
Variables declared with let are hoisted but not initialized, which means accessing them before declaration results in a ReferenceError.
Q
Can a variable declared with let be hoisted?
Related Questions on Average
What is the scope of a variable declared with let?
A). Global
B). Function
C). Block
D). Object
Can a const variable be declared without an initial value?
A). Yes
B). No
C). Only in strict mode
D). Only if it is an object
Which keyword is used to declare a read-only named constant?
A). let
B). var
C). const
D). static
Which keyword should be used for a variable that might be reassigned?
A). const
B). let
C). var
D). function
What is the temporal dead zone in ES6?
A). Time between function calls
B). Period between variable declaration and initialization
C). Time between two loops
D). Interval between event listeners
What error will the following code produce: const PI; PI = 3.14;?
A). SyntaxError
B). TypeError
C). ReferenceError
D). No error
Can const be used for objects and arrays?
A). No
B). Yes
C). Only for arrays
D). Only for objects
What will be the output of the following code: let x = 10; { let x = 20; } console.log(x);?
A). 10
B). 20
C). undefined
D). ReferenceError
What will the following code output: { const a = 10; a = 20; }?
A). 10
B). 20
C). undefined
D). TypeError
What will the following code output: { let y = 5; { let y = 10; console.log(y); } }?
A). 5
B). 10
C). undefined
D). ReferenceError