Answer & Solution
Answer: Option C
Solution:
To avoid issues with hoisting and the TDZ, declare variables with let or const and avoid accessing them before their declaration.
Q
How can you avoid issues related to hoisting and TDZ in JavaScript?
Related Questions on Average
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 arrow functions in JavaScript?
A). A. Arrow functions are hoisted with their function bodies
B). B. Arrow functions are hoisted but cannot be accessed before declaration
C). C. Arrow functions are not hoisted
D). D. Hoisting has no effect on arrow functions
What happens if you declare a const variable with the same name as an existing variable in JavaScript?
A). A. SyntaxError is thrown
B). B. The existing variable is reassigned
C). C. ReferenceError is thrown
D). D. TypeError is thrown
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
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
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
How does hoisting affect variable shadowing in JavaScript?
A). A. It allows variables with the same name in different scopes to coexist
B). B. It prevents variables with the same name in different scopes from coexisting
C). C. It has no effect on variable shadowing
D). D. It automatically renames variables with the same name
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 is hoisting in JavaScript?
A). A. A process of lifting heavy objects
B). B. Moving variable and function declarations to the top of their scope
C). C. Reducing code size
D). D. None of the above
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