Answer & Solution
Answer: Option B
Solution:
The temporal dead zone is the time between entering the block where the variable is defined and the point where the variable is declared.
Q
What is the temporal dead zone in ES6?
Related Questions on Average
What is the scope of a variable declared with let?
A). Global
B). Function
C). Block
D). Object
Which keyword should be used for a variable that might be reassigned?
A). const
B). let
C). var
D). function
What happens if you try to access a let variable before its declaration?
A). Returns undefined
B). Throws a ReferenceError
C). Returns null
D). Returns an empty string
What will the following code output: { const a = 10; a = 20; }?
A). 10
B). 20
C). undefined
D). TypeError
What error will the following code produce: const PI; PI = 3.14;?
A). SyntaxError
B). TypeError
C). ReferenceError
D). No error
What is the primary difference between var and let?
A). Scope
B). Initialization
C). Data type
D). Assignment
What is the output of the following code: let z = 3; z = 5; console.log(z);?
A). 3
B). 5
C). undefined
D). ReferenceError
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
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
What will the following code output: { let y = 5; { let y = 10; console.log(y); } }?
A). 5
B). 10
C). undefined
D). ReferenceError