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Modern Application Development II · Quiz 1 · 23 Feb 2025 · January 2025 term

Question 4: Which of the following statements is true about the let, …

Question 4

+2 marksOne correct option

Which of the following statements is true about the let, const, and var keywords in JavaScript?

  1. A

    var is block-scoped, while let and const are function-scoped.

  2. B

    const variables must always be initialized at the time of declaration.

  3. C

    Variables declared with let and const are hoisted and initialized with undefined.

  4. D

    let, const, and var have identical scoping rules.

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Correct answer

  • B

    const variables must always be initialized at the time of declaration.

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Question 4 of 16 in the IIT Madras BS Modern Application Development II (MAD 2) Quiz 1 paper sat on 23 Feb 2025, in the January 2025 term (IIT M DIPLOMA AN EXAM QDD2 23 Feb 2025). It carries 2 marks.

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