Answer & Solution
Answer: Option C
Solution:
The Temporal Dead Zone (TDZ) ensures that variables are initialized before they are accessed, preventing potential errors.
Q
What is the purpose of the Temporal Dead Zone (TDZ) in JavaScript?
Related Questions on Average
How does hoisting affect const declarations in JavaScript?
A). A. const variables are hoisted with their initial values
B). B. const variables are hoisted but cannot be accessed before declaration
C). C. const variables are hoisted and can be accessed before declaration
D). D. Hoisting does not affect const declarations
What happens if you access a var variable before its declaration in JavaScript?
A). A. ReferenceError
B). B. TypeError
C). C. undefined
D). D. No error
What is the output of the following code snippet?
A). A. TypeError
B). B. 10
C). C. undefined
D). D. SyntaxError
What is the behavior of accessing a var variable within a block before its declaration in JavaScript?
A). A. ReferenceError is thrown
B). B. SyntaxError is thrown
C). C. undefined is printed
D). D. No error
What is the behavior of accessing a const variable before its declaration in a nested block in JavaScript?
A). A. ReferenceError is thrown
B). B. SyntaxError is thrown
C). C. undefined is printed
D). D. No error
How can you avoid issues related to hoisting and TDZ in JavaScript?
A). A. Always declare variables at the bottom of the code
B). B. Use var for all variable declarations
C). C. Declare variables with let or const and avoid accessing them early
D). D. None of the above
What is the result of the following code snippet?
A). A. SyntaxError
B). B. ReferenceError
C). C. TypeError
D). D. No error
What happens if you try to reassign a const variable in JavaScript?
A). A. No effect on the variable
B). B. SyntaxError is thrown
C). C. ReferenceError is thrown
D). D. TypeError is thrown
Which keyword allows hoisting of variables in JavaScript?
A). A. var
B). B. let
C). C. const
D). D. Both A and B
How does hoisting affect function declarations in JavaScript?
A). A. Function declarations are hoisted with their function bodies
B). B. Function declarations are hoisted but cannot be accessed before declaration
C). C. Function declarations are not hoisted
D). D. Hoisting has no effect on function declarations