Quiz  /  JavaScript Class 12 MCQ Questions With Answers

  • 1. 
    Which type of array declaration allows for greater simplicity?

  • Dynamic array
  • Array Literals
  • Standar Array Syntax
  • Specified array declaration

  • 2. 
    HOW MANY CSS PROPERTIES CAN BE SET AND MODIFIED USING JS?

  • 1
  • HALF OF THE TOTAL NUMBER OF PROPERTIES
  • NONE
  • ALL PROPERTIES

  • 3. 
    File extension for external JS files

  • .javascript
  • .js
  • .jscript
  • .script

  • 4. 
    What is the symbol pair used to write a new line within a string values?

  • \*
  • \'
  • \n
  • \br

  • 5. 
    A property that contains a function definition.

  • Object Properties
  • Object Attributes
  • Object Methods
  • Objects

  • 6. 
    Which of the following is NOT a valid keyword for JS

  • new
  • switch
  • synchronize
  • void

  • 7. 
    What is the symbol used for the INCREMENT operator in JS?

  • +
  • ++
  • =
  • ==

  • 8. 
    Conditions return values of which data type?

  • Integer
  • boolean
  • floating-point
  • string

  • 9. 
    This allows JS Scripts and applications to perform different actions based on given conditions.

  • Variables
  • Loops
  • Conditional Statement
  • Stacks

  • 10. 
    Using object constructors what specific keyword is used to create new object?

  • if
  • var
  • new
  • this

  • 11. 
    Which of the following is a symbol that must NOT be present in any JS Variable?

  • A
  • z
  • _
  • %

  • 12. 
    These are any variable names listed within a function's argument definition.example: myFunction(x, y)

  • Parameter
  • Literals
  • Constraints
  • Variables

  • 13. 
    Symbol pair used to code backspace within string value

  • \b
  • \bspace
  • \backspace
  • \n

  • 14. 
    Built in object in JS that allows a script to perform mathematical task

  • Arithmetic
  • Math Object
  • Operation Object
  • Mathematics Object

  • 15. 
    In JS, Arrays are considered as what type of programming concept?

  • Class
  • Variable
  • Object
  • Function

  • 16. 
    Which of the following operator is used for the Assignment Operator?

  • ==
  • !
  • =
  • +

  • 17. 
    Which of the following is NOT a valid component of a function declaration?

  • Function keyword
  • Function name
  • Pair of Square Braces
  • Pair of Curly Braces
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