JavaScript MCQs with answers Page - 54

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. What will be the reaction when a catch clause has no conditionals ?

  • (A) Takes it to be 0
  • (B) Takes it to be true
  • (C) Takes it to be 1
  • (D) Takes it to be false

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Q. When will the finally block be called?

  • (A) When the catch doesnot match
  • (B) When there is no exception
  • (C) When there is exception
  • (D) None of the mentioned

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Q. What is the return type of typeof for standard JavaScript objects?

  • (A) xml
  • (B) object
  • (C) dom
  • (D) html

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Q. Which method to use while working with XML fragments, instead of XML()?

  • (A) XMLInterface()
  • (B) XMLClass()
  • (C) XMLList()
  • (D) XMLArray()

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Q. The four kinds of class members are

  • (A) Instance fields, Instance methods, Class fields, Class methods
  • (B) Instance methods, Instance fields, Static method, Dynamic method
  • (C) Global methods, Local methods, Dynamic methods, Static methods
  • (D) Instance fields, Non-instance fields, Dynamic methods, Global methods

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Q. The object whose properties are inherited by all instances of the class, and properties whose values are functions behaving like instance methods of the class, is

  • (A) Instance object
  • (B) Destructor object
  • (C) Constructor object
  • (D) Prototype object

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Q. Which are usually variables that are used internally in object methods and also are globally visible variables?

  • (A) Variable properties
  • (B) Object properties
  • (C) Internal properties
  • (D) Method properties

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Q. The class that represents the regular expressions is

  • (A) RegExpObj
  • (B) RegExpClass
  • (C) RegExp
  • (D) StringExp

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Q. Which looping statement allows XML tags to appear in JavaScript programs and adds API for operating on XML data?

  • (A) for loop
  • (B) for/each loop
  • (C) while loop
  • (D) all of the mentioned

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Q. Which exception does the Iterators throw from their next() method when there are no more values to iterate, that work on finite collections ?

  • (A) AbortIteration
  • (B) ExitIteration
  • (C) StopIteration
  • (D) Abort

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