JavaScript MCQs with answers Page - 56

Here, you will find a collection of MCQ questions on JavaScript. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. How do you find the greatest value of “a” and “b”?

  • (A) Math.ceil(a, b)
  • (B) Math.max(a, b)
  • (C) ceil(a, b)
  • (D) top(a, b)

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Q. How can you add a comment in JavaScript code?

  • (A) //This is a comment
  • (B) "This is a comment"
  • (C) #This is a comment
  • (D) None of these

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Q. JavaScript is the same as Java?

  • (A) True
  • (B) False
  • (C) ---
  • (D) ---

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Q. How to round the number 3.12 to a closer integer number?

  • (A) Math.round(3.12)
  • (B) Math.rnd(3.12)
  • (C) float(3.12)
  • (D) Math.float(3.12)

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Q. What is the correct syntax of the “while” loop?

  • (A) while (i <= 5)
  • (B) while i = 1 to 5
  • (C) while (i <= 5; i++)
  • (D) while (i=0; i <= 5; i++)

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Q. What is the correct syntax of the “for” loop?

  • (A) for (i <= 10; i++)
  • (B) for i = 1 to 10
  • (C) for (i = 0; i <= 10)
  • (D) for (i = 0; i <= 10; i++)

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Q. What is the correct syntax for opening a new window called “f2”?

  • (A) f2 = window.new("https://example.com");
  • (B) f2 = window.open("https://example.com");
  • (C) f2 = document.open("https://example.com");
  • (D) f2 = document.new("https://example.com");

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Q. What is the correct syntax to write an array in JavaScript?

  • (A) var fruits = 1 = ("orange"), 2 = ("banana"), 3 = ("apple")
  • (B) var fruits = (1:"orange", 2:"banana", 3:"apple")
  • (C) var fruits = "orange", "banana", "apple"
  • (D) var fruits = ["orange", "banana", "apple"]

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Q. What is the output of : String.fromCharCode(65)?

  • (A) 1
  • (B) A
  • (C) error
  • (D) false

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Q. What event do you use to perform something after the page has finished loading?

  • (A) onfinished
  • (B) onload
  • (C) onunload
  • (D) oncomplete

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