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Download Javascript Basics MCQs Free PDF

Javascript Basics MCQ Quiz in বাংলা - Objective Question with Answer for Javascript Basics - বিনামূল্যে ডাউনলোড করুন [PDF]

Last updated on Mar 12, 2025

পাওয়া Javascript Basics उत्तरे आणि तपशीलवार उपायांसह एकाधिक निवड प्रश्न (MCQ क्विझ). এই বিনামূল্যে ডাউনলোড করুন Javascript Basics MCQ কুইজ পিডিএফ এবং আপনার আসন্ন পরীক্ষার জন্য প্রস্তুত করুন যেমন ব্যাঙ্কিং, এসএসসি, রেলওয়ে, ইউপিএসসি, রাজ্য পিএসসি।

Latest Javascript Basics MCQ Objective Questions

Top Javascript Basics MCQ Objective Questions

Javascript Basics Question 1:

Which of the following is suitable tag for java script in HTML?

  1. < java >< java >
  2. < script >< /script >
  3. < jvm >< /jvm >
  4. < JS >< /JS >
  5. < !--xml >< /!--xml >

Answer (Detailed Solution Below)

Option 2 : < script >< /script >

Javascript Basics Question 1 Detailed Solution

The HTML  tag is used to embed or reference a client-side script such as JavaScript. This tag is also commonly referred to as the element.

Syntax

There are two ways that you can use the

Javascript Basics Question 2:

JavaScript is contained inside the _______ tags.

  1. < font > ….
  2. < script > ....
  3. < head > ....
  4. < body > ….

Answer (Detailed Solution Below)

Option 2 : < script > ....

Javascript Basics Question 2 Detailed Solution

JavaScript was created to make webpages. Programs in the language are known as scripts. These scripts are executed as plain text. JavaScript has full integration with HTML/CSS.

JavaScript programs are inserted into any part of the HTML document with the help of

Code:

alert (‘this is a javascript program’);

Javascript Basics Question 3:

Which of the following attributes of text-box control, allow to limit the maximum character?

  1. size
  2. len
  3. max length
  4. All of these

Answer (Detailed Solution Below)

Option 3 : max length

Javascript Basics Question 3 Detailed Solution

In HTML, the max length attribute specifies the maximum number of characters allowed in the element. The default value is 524288.

Syntax:

Value is the maximum number of characters allowed in the element.

Javascript Basics Question 4:

Which of the following dialog boxes is used to give warning message to the users?

  1. Alert dialog box
  2. Confirmation dialog box
  3. Prompt dialog box
  4. Warning dialog box
  5. None of the above

Answer (Detailed Solution Below)

Option 1 : Alert dialog box

Javascript Basics Question 4 Detailed Solution

An alert dialog box is mostly used to give a warning message to the users. For example, if one input field requires to enter some text but the user does not provide any input, then as a part of validation, you can use an alert box to give a warning message. Alert box gives only one button "OK" to select and proceed.

Javascript Basics Question 5:

What is the correct CSS code for adding a background color?

  1. yellow
  5. None of above

Answer (Detailed Solution Below)

Option 4 :

Javascript Basics Question 5 Detailed Solution

CSS syntax:

Colour(options)

Example

Description

 ccolour_name

 Red

 Name of colour

 hex_number

 #ff0000

 Hexadecimal colour code 

 Rgb_number

 rgb(255,36,0) 

 rgb colour code

Javascript Basics Question 6:

What is the output of the below code?

var x=21;  

if(x > 23) {  

document.write(22);  

}  

else {  

document.write(x);  

} 

  1. 21
  2. 22
  3. 23

  4. Undefined

Answer (Detailed Solution Below)

Option 1 : 21

Javascript Basics Question 6 Detailed Solution

The "if-else" is one of the conditional statements available in JavaScript like several other languages.

Code:

int x=21;  

if(x > 23) {   /false

document.write(22);  

} 

else {              

document.write(x);  / It will be executed

}

Javascript Basics Question 7:

In VB Script, which of the following function return the date for a specified year, month, and day?

  1. CDate
  2. Date
  3. IsDate
  4. DateSerial

Answer (Detailed Solution Below)

Option 4 : DateSerial

Javascript Basics Question 7 Detailed Solution

Following are the Date Function used in VB Script 

CDate - Converts a valid date and time expression to the variant of subtype Date

Date - Returns the current system date

DateAdd - Returns a date to which a specified time interval has been added

DateSerial - Return the date for a specified year, month, and day

Therefore Option 4 is correct

Javascript Basics Question 8:

What is the proper syntax when using a message dialog box?

  1. MessageBox.Show(“Hello”, “Testbook”)
  2. MessageBox.Show(Hello, Testbook)
  3. MessageBox.Show “Hello”, “Testbook”
  4. MessageBox.Show Hello, Testbook

Answer (Detailed Solution Below)

Option 1 : MessageBox.Show(“Hello”, “Testbook”)

Javascript Basics Question 8 Detailed Solution

A message box is a special dialog box used to display a piece of information to the user. To support message boxes, the Visual Basic language provides a function named MsgBox.

Syntax:

MsgBox(Message)

To create a message box using the .NET Frameworkwe use Show() method of the MessageBox class using the following formula:

MessageBox.Show(Message)

Therefore Option 1 is correct

Javascript Basics Question 9:

Node.js uses _____ on the server.

  1. JavaScript
  2. Java
  3. PHP
  4. ASP.NET

Answer (Detailed Solution Below)

Option 1 : JavaScript

Javascript Basics Question 9 Detailed Solution

  • Node.js is an open source server environment
  • Node.js is free
  • Node.js runs on various platforms like Windows, Linux, Unix, Mac etc.
  • Node.js uses JavaScript on the server

Javascript Basics Question 10:

What is the output of the following program?

#include using namespace std; class OS { public: void display() { cout } }; class Windows: public OS { public: void display() { cout OS::display(); } }; int main() { Windows w; w.display(); }

  1. Windows
  2. Operating System
  3. Windows Operating System
  4. None of above

Answer (Detailed Solution Below)

Option 3 : Windows Operating System

Javascript Basics Question 10 Detailed Solution

The above code implements a function overriding concept. When an object of the derived class is created (i.e. w) and call the member function(display ()), the member function of the derived class is invoked and the function of the base class is ignored. After invoking the display () method of class windows, it will print ‘windows’. Now at OS :: display() overridden function of base class i.e. display() method of class OS will get executed. Hence it will print Operating system.

Output: Windows Operating System.

Note:- For better understanding try to run the above program.

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