Q
Which of the following keywords can be used to declare a block-scoped variable in JavaScript?

Answer & Solution

Answer: Option D
Solution:
In JavaScript, 'let' and 'const' keywords are used to declare block-scoped variables.
Related Questions on Average

In JavaScript, which of the following creates a block-scoped variable within a loop?

A). var

B). let

C). const

D). Both let and const

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++

Can a variable declared with 'let' in a loop be accessed outside the loop in JavaScript?

A). Yes

B). No

C). Sometimes

D). Depends on the context

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

A). Block-scoped

B). Global-scoped

C). Function-scoped

D). Loop-scoped

What is the scope of a variable declared with 'var' inside a loop in JavaScript?

A). Global

B). Function-scoped

C). Block-scoped

D). Loop-scoped

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

A). var is block-scoped, let is function-scoped

B). var is function-scoped, let is block-scoped

C). var and let are both function-scoped

D). var and let are both block-scoped

In Go, what happens to a variable declared inside a loop after the loop ends?

A). It is still accessible

B). It is garbage collected

C). It becomes nil

D). It throws an error

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

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 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