Answer & Solution
Answer: Option B
Solution:
A redeclared variable in JavaScript retains its last assigned value, overriding the previous value.
Q
What is the behavior of a redeclared variable in JavaScript?
Related Questions on Average
What is the result of the following code snippet?
A). A. SyntaxError is thrown
B). B. 10
C). C. 20
D). D. 30
What is the output of the following code snippet?
A). A. 10
B). B. 20
C). C. 30
D). D. Error
Which keyword allows redeclaring variables in JavaScript?
A). A. let
B). B. var
C). C. const
D). D. Both A and C
What is the behavior of a redeclared variable in JavaScript with let or const within nested scopes?
A). A. It inherits the value from the outer scope
B). B. It retains its original value within the nested scope
C). C. It throws an error
D). D. It becomes undefined
What is variable redeclaring in JavaScript?
A). A. Changing the value of a variable
B). B. Declaring the same variable again within the same scope
C). C. Deleting a variable
D). D. Assigning multiple values to a variable
What is the scope of a redeclared variable in JavaScript with let or const?
A). A. Global scope
B). B. Function scope
C). C. Block scope
D). D. Module scope
What is the output of the following code snippet?
A). A. SyntaxError is thrown
B). B. 20
C). C. 30
D). D. undefined
What is the behavior of a redeclared variable in JavaScript with const?
A). A. It retains its original value
B). B. It becomes undefined
C). C. It throws a SyntaxError
D). D. It inherits the value from the outer scope
What is the result of the following code snippet?
A). A. SyntaxError is thrown
B). B. 20
C). C. 30
D). D. Error
What is the behavior when redeclaring a variable with var in JavaScript?
A). A. SyntaxError is thrown
B). B. No effect on the variable
C). C. Variable value is changed
D). D. Variable reference is updated