EXERCISE

JavaScript Variables

Chapter 3 · Check variable declaration and naming rules.

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Exercise 3A

JavaScript Variables

Check variable declaration and naming rules.

QUESTION 1 OF 10

Which keyword declares a block-scoped constant?

QUESTION 2 OF 10

What happens when a let variable is declared inside a block?

QUESTION 3 OF 10

Which statement about const is correct?

QUESTION 4 OF 10

Which keyword is generally preferred over var for new code when reassignment is needed?

QUESTION 5 OF 10

Which operator assigns a value?

QUESTION 6 OF 10

Which keyword declares a block-scoped variable that may be reassigned?

QUESTION 7 OF 10

Which is case-sensitive?

QUESTION 8 OF 10

Which is valid?

QUESTION 9 OF 10

A JavaScript identifier may start with…

QUESTION 10 OF 10

Which naming style is commonly used in JavaScript?