Q
Which of the following is a correct variable declaration in JavaScript?

Answer & Solution

Answer: Option C
Solution:
Both 'var Variable = 1;' and 'var variable = 1;' are correct but they refer to different variables due to case sensitivity.
Related Questions on Average

How should constants be declared to avoid confusion with variable names?

A). UPPERCASE

B). lowercase

C). camelCase

D). snake_case

Can JavaScript variables 'example' and 'Example' be declared in the same scope?

A). Yes

B). No

C). Only in strict mode

D). Only in non-strict mode

How does JavaScript differentiate between 'myVar' and 'MyVar'?

A). It doesn't, both are the same

B). It treats them as different variables

C). It throws an error

D). None of the above

Is 'myfunction' the same as 'myFunction' in JavaScript?

A). Yes

B). No

C). Only in strict mode

D). Only in non-strict mode

What is the effect of case sensitivity on debugging JavaScript code?

A). No effect

B). Makes it easier

C). Makes it harder

D). No significant impact

What happens if you try to declare two variables with the same name but different cases?

A). Error

B). Both are declared

C). Only one is declared

D). None of the above

Which of the following will create a case sensitivity error in JavaScript?

A). let firstName = 'John'; let firstname = 'Doe';

B). let FirstName = 'John'; let firstName = 'Doe';

C). let firstName = 'John'; let Firstname = 'Doe';

D). None of the above

Which of the following statements is true about case sensitivity in JavaScript?

A). Variable names are case-insensitive

B). Function names are case-insensitive

C). Identifiers are case-sensitive

D). All of the above

In JavaScript, is 'myVariable' the same as 'myvariable'?

A). Yes

B). No

C). Depends on the context

D). Only in strict mode

What is the best practice for naming variables to avoid issues with case sensitivity?

A). Use only lowercase

B). Use only UPPERCASE

C). Use consistent case conventions

D). Use special characters