MCQ On JavaScript With Answer Set-2

This set of MCQ on JavaScript includes the collection of multiple-choice questions on the fundamentals of JavaScript along with their answer. It includes MCQ on built-in JavaScript functions, different types of dialog boxes supported by JavaScript and a different variant of Date( ) constructor to create a date object with the answer.

1. You can redirect the webpage in JavaScript by using ………………… method. A) window. reload
B) window.location
C) page.location
D) url.newlocation

2. ………………….. is a built-in JavaScript function which can be used to execute another function after a given time interval.
A) Timeout( )
B) TimeInterval( )
C) setTimeout ( )
D) All of the above

3. You can refresh the webpage in JavaScript by using ……………. method.
A) window.reload
B) location. reload
C) window. refresh
D) page.refresh

4. The different types of dialog boxes supported by JavaScript are
i) Alert dialog box
ii) Information dialog box
iii) Confirmation dialog box
iv) Prompt dialog box

A) i, ii and iii only
B) i, iii and iv only
C) i, ii and iv only
D) All i, ii, iii, and iv

5. A ………………… mostly used to take users choice on any option and displays a dialog box with two buttons Ok and Cancel.
A) Alert dialog box
B) Information dialog box
C) Prompt dialog box
D) Confirmation dialog box

Table of Contents

Read Also: Solved MCQ on JavaScript Window Object

6. Match the following with their description.
a) Encapsulation i) The capability to write on function or method that works a variety of different ways.
b) Aggregation ii) The capability of a class to rely upon another class.
c) Inheritance iii) The capability to store one object inside of another object.
d) Polymorphism iv) The capability to store related information.
A) i-d, ii-c, iii-b, iv-a
B) i-b, ii-c, iii-a, iv-d
C) i-c, ii-d, iii-a, iv-b
D) i-a, ii-c, iii-d, iv-b

7. …………………. are usually variables that are used internally in the object’s methods, but can also be globally visible variables that are used through the page.
A) Object properties
B) Variable properties
C) Method properties
D) Internal properties

8. State True or False.
i) We can refresh a web page using JavaScript location.reload method.
ii) The function page.print( ) will print the current web page.
iii) With no arguments, the Date( ) constructor creates a Date object set to the current date and time.
A) i- True, ii- False, iii-True
B) i- False, ii- True, iii-True
C) i-True, ii-True, iii-False
D) i- False, ii- False, iii-True

9. The JavaScript …………………… class represents regular expressions, and both string and ……………….. define methods that use regular expressions.
A) RegExpObj
B) RegExpClass
C) RegExp
D) StringExp

10. 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 [, hour, minute, second, millisecond])
A) i, ii and iii only
B) ii, iii and iv only
C) i, ii and iv only
D) All i, ii, iii, and iv

Answers:

1. B) window.location
2. C) setTimeout ( )
3. B) location. reload
4. B) i, iii and iv only
5. D) Confirmation dialog box
6. A) i-d, ii-c, iii-b, iv-a
7. B) Variable properties
8. A) i- True, ii- False, iii-True
9. C) RegExp
10. B) ii, iii and iv only