MCQ of JavaScript with Answer set-2
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
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| Titel WikiBook JavaScript (Photo credit: Wikipedia) |
i) Alert dialog box
ii) Information dialog box
iii) Conformation 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) Conformation dialog box
6. Match the following with their description.
a) Encapsulation i) The capability to write on function or method that works variety of different ways.
b) Aggregation ii) The capability of a class to relay 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 objects 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) Conformation 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
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