Augmentation of Classes MCQ

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• You can refresh the webpage in JavaScript by using ________
  ক

  window.reload

  খ

  location.reload

  গ

  window.refresh

  ঘ

  page.refresh
• What is the procedure to add methods to HTMLElement so that they will be inherited by the objects that represent the HTML tags in the current document?
  ক

  HTMLElement.prototype(…)

  খ

  HTMLElement.prototype

  গ

  HTML.addmethods()

  ঘ

  HTML.elements(ad[
• How can we make methods available on all objects?
  ক

  Object.add(methods)

  খ

  Object.methods(add)
• Which is the correct code that returns a complex number that is the complex conjugate of this one?
  ক

  Complex.prototype.conj = function() { return new Complex(this.r, -this.i); };

  খ

  Complex.prototype.conj = function() { return Complex(this.r, -this.i); };

  গ

  Complex.prototype.conj = function() { return (this.r, -this.i); };

  ঘ

  Complex.prototype.conj = function() { new Complex(this.r, -this.i); };
• The different variant of Date() constructor to create date object is/are ___________ i. new Date(date) ii. new Date(milliseconds) iii. new Date(date string) iv. new Date(year, month, date)
  ক

  ) ] i, ii and iii only

  খ

  hour, minute, second, millisecond

  গ

  hour, minute, second, millisecond

  ঘ

  hour, minute, second, millisecond
• The class that represents the regular expressions is ________
  ক

  RegExpObj

  খ

  RegExpClass

  গ

  RegExp

  ঘ

  StringExp
• Which variables are used internally in object methods and are also globally visible?
  ক

  Object properties

  খ

  Variable properties

  গ

  Method properties

  ঘ

  Internal properties
• 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 ________
  ক

  Instance object

  খ

  Constructor object

  গ

  Destructor object

  ঘ

  Prototype object
• Different kinds of the object involved in a class definition are ________
  ক

  Public object, Private object, Protected object

  খ

  Constructor object, Function object, Destructor object

  গ

  Constructor object, Prototype object, Instance object

  ঘ

  Instance method, Static object, Dynamic object
• The four kinds of class members are ________
  ক

  Instance methods, Instance fields, Static method, Dynamic method

  খ

  Instance fields, Instance methods, Class fields, Class methods

  গ

  Instance fields, Non-instance fields, Dynamic methods, Global methods

  ঘ

  Global methods, Local methods, Dynamic methods, Static methods