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 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 is the primary difference between var and let?
A). Scope
B). Initialization
C). Data type
D). Assignment
What will the following code output: { const a = 10; a = 20; }?
A). 10
B). 20
C). undefined
D). TypeError
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
Are variables declared with let and const accessible before they are declared?
A). Yes
B). No
C). Only in strict mode
D). Only if they are numbers
Which keyword is used to declare a read-only named constant?
A). let
B). var
C). const
D). static
What is the value of a const variable once it is assigned?
A). Can be changed later
B). Cannot be changed later
C). Depends on the data type
D). Undefined initially
What error will the following code produce: const PI; PI = 3.14;?
A). SyntaxError
B). TypeError
C). ReferenceError
D). No error
Which keyword allows block-level scope in ES6?
A). var
B). let
C). function
D). var and function
What is the scope of a variable declared with let?
A). Global
B). Function
C). Block
D). Object