Q
What is the difference in scope between variables declared with 'var' and 'let' in JavaScript loops?

Answer & Solution

Answer: Option B
Solution:
In JavaScript, 'var' is function-scoped, meaning it is accessible within the entire function, while 'let' is block-scoped, limiting its accessibility to the block it is defined in.
Related Questions on Average

What is the consequence of using a variable declared with 'const' inside a loop in JavaScript?

A). It can be reassigned

B). It cannot be reassigned

C). It can be redeclared

D). It is hoisted

In which scenario is a variable declared inside a loop inaccessible outside of it?

A). When using var in JavaScript

B). When using let in JavaScript

C). When using global in Python

D). When using static in C++

What happens to a variable declared inside a loop with 'var' in JavaScript after the loop ends?

A). It is destroyed

B). It is still accessible

C). It becomes undefined

D). It throws an error

In Swift, how are variables declared inside a loop scoped?

A). Global

B). Function-scoped

C). Block-scoped

D). File-scoped

In C, what is the scope of a variable declared inside a while loop?

A). Global

B). Local to the block

C). Local to the function

D). Local to the file

Which of the following is true about variables declared with 'let' inside a loop in JavaScript?

A). They are accessible globally

B). They are hoisted to the top

C). They are block-scoped

D). They can be accessed outside the loop

In PHP, what is the scope of a variable declared inside a for loop?

A). Global

B). Function-scoped

C). Block-scoped

D). Script-scoped

In C++, where can a variable declared inside a for-loop be accessed?

A). Only within the loop

B). Throughout the function

C). Throughout the file

D). Outside the function

In Ruby, can a variable declared inside a loop be accessed outside the loop?

A). Yes

B). No

C). Only in certain cases

D). It depends on the loop

In Python, what happens to a variable declared inside a loop after the loop terminates?

A). It gets destroyed

B). It is still accessible

C). It becomes global

D). It gets re-initialized