Types, Values and Variables MCQ

Test your knowledge with important Types, Values and Variables MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Types, Values and Variables MCQs at Bissoy

• Assume that we have to convert “false” that is a non-string to string. The command that we use is (without invoking the “new” operator).
  ক

  false.toString()

  খ

  String(false)

  গ

  String newvariable=”false”

  ঘ

  Both false.toString() and String(false)
• The statement a===b refers to _________
  ক

  Both a and b are equal in value, type and reference address

  খ

  Both a and b are equal in value

  গ

  Both a and b are equal in value and type

  ঘ

  There is no such statement
• The snippet that has to be used to check if “a” is not equal to “null” is _________
  ক

  if(a!=null) c) if(a!null) d) if(a!==null) View Answer]

  খ

  if (!a)

  গ

  if(a!null)

  ঘ

  if(a!==null)
• The escape sequence ‘\f’ stands for _________
  ক

  Floating numbers

  খ

  Representation of functions that returns a value

  গ

  \f is not present in JavaScript

  ঘ

  Form feed
• Which of the following is not considered as an error in JavaScript?
  ক

  Syntax error

  খ

  Missing of semicolons

  গ

  Division by zero

  ঘ

  Missing of Bracket
• JavaScript _________ when there is an indefinite or an infinite value during an arithmetic computation.
  ক

  Prints an exception error

  খ

  Prints an overflow error

  গ

  Displays “Infinity”

  ঘ

  Prints the value as such
• The generalised syntax for a real number representation is __________ digits] b) digits] c) digits] d) digits]
  ক

  digits] c) digits] d) digits] View Answer]

  খ

  digits

  গ

  digits

  ঘ

  digits
• A hexadecimal literal begins with __________
  ক

  00

  খ

  0x

  গ

  0X

  ঘ

  Both 0x and 0X
• The type of a variable that is volatile is _______________
  ক

  Volatile variable

  খ

  Mutable variable

  গ

  Immutable variable

  ঘ

  Dynamic variable
• JavaScript Code can be called by using ___________
  ক

  RMI

  খ

  Triggering Event

  গ

  Preprocessor

  ঘ

  Function/Method