Javascript

 

SHORT ANSWER QUESTIONS-5 MARKS

 

1. 2082 Q.No. 11 Write JavaScript code to input any three numbers and find the smallest number among them.

<html>

            <head>

                        <title> Smallest among of three numbers</title>

            </head>

            <body>

                        <script>

                                    var a = parseInt(prompt("Enter 1st number"));

                                    var b = parseInt(prompt("Enter 2nd number"));

                                    var c = parseInt(prompt("Enter 3rd number"));

                                    if(a<b&&a<c)

                                    {

                                                alert(a+ "is smallest");

                                    }

                                    else if(b<a&&b<c)

                                    {

                                                alert(b+ "is smallest");

                                    }

                                    else

                                    {

                                                alert(c+ "is smallest");

                                    }

                        </script>

            </body>

</html>

 

2.2081 GIE Set A Q.No. 11 Write a JavaScript Code snippet, along with HTML, that displays the multiplication table of a entered number.

<html>

<head>

    <title>Multiplication Table</title>

</head>

<body>

<script>

    var a = parseInt(prompt("Enter a number"));

 

    for (var i = 1; i <= 10; i++) {

        document.write(a + " × " + i + " = " + (a * i) + "<br>");

    }

</script>

</body>

</html>

 

3.2081 GIE Set B Q.No. 11 Write a program in JavaScript to find largest number among three numbers.

<html>

<head>

    <title>Greatest Among Three Numbers</title>

</head>

<body>

<script>

    var a = parseInt(prompt("Enter first number"));

    var b = parseInt(prompt("Enter second number"));

    var c = parseInt(prompt("Enter third number"));

 

    if (a >b && a > c) {

        document.write("Greatest number is: " + a);

    } else if (b > a && b > c) {

        document.write("Greatest number is: " + b);

    } else {

        document.write("Greatest number is: " + c);

    }

</script>

</body>

</html>

 

4. 2081 Q.No. 11 Write a JavaScript function that checks if a number is even or odd and print the result.

<html>

<head>

    <title>Odd Even using Function</title>

</head>

<body>

<script>

 var n = parseInt(prompt("Enter anumber"));

    function check(n)

    {

        var r = n % 2;  

        if (r == 0)

        {

            document.write(n + " is even");

        }

         else

         {

            document.write(n + " is odd");

        }

    }

  

    check(n);

</script>

</body>

</html>

 

5. 2080 GIE Set A Q.No. 11 Write a program to find the largest number among three numbers in JavaScript.

<html>

<head>

    <title>Greatest Among Three Numbers</title>

</head>

<body>

<script>

    var a = parseInt(prompt("Enter first number"));

    var b = parseInt(prompt("Enter second number"));

    var c = parseInt(prompt("Enter third number"));

    if (a > b && a > c) {

        document.write("Greatest number is: " + a);

    } else if (b > a && b > c) {

        document.write("Greatest number is: " + b);

    } else {

        document.write("Greatest number is: " + c);

    }

</script>

</body>

</html>

 

6. 2080 GIE Set B Q.No. 11 How do you add an event handler in JavaScript? Give an example.

We can add an event handler in JavaScript in two main ways:

 

1. Using HTML Attribute (Inline Event Handler)

<button onclick="displayMessage()">Click Me</button>

<script>

function displayMessage() {

    alert("Button clicked!");

}

</script>

 

2. Using JavaScript's addEventListener()

<button id="btn">Click Me</button>

<script>

document.getElementById("btn").addEventListener("click", function() {

    alert("Button clicked using addEventListener!");

});

</script>

 

7. 2080 Q.No. 110R Write a JavaScript code to calculate the factorial of a given number.

<html>

<head>

    <title>Factorial of a Number</title>

</head>

<body>

<script>

    var n = parseInt(prompt("Enter a number"));

    var fact = 1;

    for (var i = 1; i <= n; i++) {

        fact = fact * i;

    }

    document.write("Factorial of " + n + " is: " + fact);

</script>

</body>

</html>

 

8. 2079 GIE Set A Q.No. 11 Write a function to enter two numbers and find sum of two numbers in JavaScript.

<html>

<head>

    <title>Sum of Two Numbers</title>

</head>

<body>

<script>

       function add(a, b) {

        return a + b;

    }

    var n1 = parseInt(prompt("Enter first number"));

    var n2 = parseInt(prompt("Enter second number"));

    var result = add(n1, n2);

    document.write("Sum = " + result);

</script>

</body>

</html>

 

9. 2079 Set A Q.No. 11 Write a program to find the factorial of any given number using Javascript.

<html>

<head>

    <title>Factorial of a Number</title>

</head>

<body>

<script>

    var n = parseInt(prompt("Enter a number"));

    var fact = 1;

     for (var i = 1; i <= n; i++) {

        fact = fact * i;

    }

    document.write("Factorial of " + n + " is: " + fact);

</script>

</body>

</html>

 

 

10. Write short notes on Internet technology.

Internet technology refers to the set of techniques, protocols, and systems that enable computers and other digital devices to connect, communicate, and exchange data over a global network called the Internet. It allows users to access information, services, and resources from anywhere in the world.

 

The technology is based on standard communication protocols like TCP/IP, which ensure reliable data transfer between devices. Through Internet technology, various applications such as email, web browsing, online banking, e-learning, and social networking are possible. It has revolutionized communication, education, business, and entertainment by making information easily accessible and shareable globally.

 

11. Differentiate between server-side and client-side scripting.


Client-Side Scripting

Server-Side Scripting

Client side scripting is used at the

 front end which users can  see from the  browser

Server side scripting is used at the backend where the source code is not viewable or hidden at the client side browser

Its main function is to provide the requested output to end user.

Its primary function is to manipulate and  provides access to the respective database as per the request

It runs on the user’s computer .

It runs on the webserver

Client side scripting does not need any server interaction

When a server side script is processed it communicates to the server

It usually depends on the browser and its version.

In this any server side technology can be used and it does not depend on the  client

It is useful in minimizing the load on the  server

It is useful in customizing the web pages and implementing dynamic changes in the website.

It is not secured compared to the server side as a client side script is visible to the users

It is more secure than client side scripting as scripts are usually hidden from the client end.

The client side scripting langauges involves languages such as html css and javascript

Server side language involves programming such as PHP, ASP.NET, Python, C#, JSP etc.


12. Explain different data types used in JavaScript.

Data Types Used in JavaScript

 

1. Primitive (Simple) Data Types

These store single values

 

a) Number

Used to store numeric values (integer or decimal).

var age = 20;

 

b) String

Used to store text (characters, words, sentences).

var name = "Ram";

 

c) Boolean

Stores either  true or false.

var isPass = true;

 

d) Undefined

A variable declared but not assigned any value.

var x;

 

e) Null

Represents empty or no value.

var data = null;

 

2. Composite (Reference) Data Types

These can store multiple values.

 

a) Object

Collection of key–value pairs.

 

var student = {name: "Sita", age: 18};

 

b) Array

List of multiple values in a single variable.

var marks = [80, 75, 90];

 

c) Function

A block of code that performs a specific task.

function add(a, b) {

    return a + b;

}

 

LONG ANSWER QUESTIONS-8 MARKS

 

13. 2079 GIE Set B Q.No. 15 What are the uses of Java Script in web page development?

JavaScript is a client-side scripting language widely used to make web pages dynamic, interactive, and responsive. Its main uses in web development are:

 

1. Client-Side Validation

·         JavaScript can validate user input in forms before sending it to the server.

·         Example: Checking if all required fields are filled, or if an email address is in the correct format.

·         Reduces server load and improves user experience.

 

2. Dynamic Content

·         JavaScript allows web pages to change content without reloading the page.

·         Example: Updating text, images, or tables dynamically based on user actions.

 

3. Event Handling

·         Responds to user actions such as clicks, mouse movements, keyboard input, etc.

·         Example: Displaying a popup when a button is clicked or changing the color of a button on hover.

 

4. Interactive Effects

·         Adds interactive features to web pages such as image sliders, tabs, dropdown menus, and animations.

·         Enhances the overall look and feel of the website.

 

5. Browser Control

·         JavaScript can control browser actions like opening new windows, printing a page, or redirecting to another page.

·         Example: `window.open()`, `window.location.href`.

 

6. Cookies and Storage

·         JavaScript can store data in cookies or local storage for remembering user preferences or session information.

·         Example: Keeping a user logged in or remembering selected language on the website.

 

7. Communication with Server (AJAX)

·         JavaScript can request data from the server without reloading the page, using AJAX.

·         Example: Loading new messages in a chat app or updating search results dynamically.

 

8. Formatted Output and Calculations

·         JavaScript can perform calculations and display results instantly on the page.

·         Example: Online calculators, dynamic pricing in e-commerce websites.

 

14. What is Object-based programming? Explain different JavaScript objects.

Object-based programming is a programming approach in which data and functions are grouped together into objects. Unlike full object-oriented programming (OOP), object-based programming does not support inheritance but allows encapsulation and use of objects to structure programs.

 

In JavaScript, object-based programming allows developers to create objects that store data (properties) and behavior (methods), making web applications more organized and easier to manage.

 

Different JavaScript Objects

JavaScript provides several built-in objects that can be used in web development:

1. String Object

·         Represents text and provides properties and methods for text manipulation.

·         Example:

var name = new String("Ram");

document.write(name.length);

 

2. Number Object

·         Represents numeric values and provides methods for numeric operations.

·         Example:

var num = new Number(100);

document.write(num.toFixed(2));

 

3. Boolean Object

·         Represents logical values: true or false.

·         Example:

 

var flag = new Boolean(true);

document.write(flag); // true

 

4. Array Object

·         Stores multiple values in a single variable as a list.

·         Example:

var marks = [80, 75, 90];

document.write(marks[0]);

 

5. Date Object

·         Represents date and time, with methods to get and set date/time values.

·         Example:

var today = new Date();

document.write(today.getFullYear()); // 2025

 

6. Math Object

·         Provides mathematical constants and functions like `Math.PI`, `Math.sqrt()`, `Math.random()`.

·         Example:

document.write(Math.sqrt(16)); // 4

 

7. Object Object

·         The base object from which all other objects are derived. You can create custom objects.

·         Example:

var person = {name: "Sita", age: 18};

document.write(person.name); // Sita

 


 

Popular posts from this blog

Computer

Grid for SEE class 10 Computer Science  Chapter Very Short Questions( (1 marks each) Short Questions( (2 marks each) Long Questions(4 marks each) Total Computer Fundamentals 6X1=6 (2 QnA, 2TT, 2FF) 5X2=10 (5 QnA) 1X4=4 (Number System) 20 Marks DBMS 2X1=2 (2 QnA) 4X2=8 (4 QnA) - 10 Marks QBASIC 1X1=1 (1 QnA) 3X2=6 (Output, Debug, QnA) 2X4=8 (Sub, Function, File Handling) 15 Marks C- programming 1X1=1 (1 QnA) - 1X4=4   5 Marks Total 10 questions 12 questions 4 questions 50 marks
Read more

Sequential Programs

  Sequential Programs 1.       WAP to display sum of two integer numbers. x = 2 y = 3 result = x+ y print("The sum is:",result)   Output: The sum is: 5   WAP to display sum of two integer numbers given by the user. 1.1 x = int(input("Enter the first number:")) y = int(input("Enter the second number:")) result = x+ y print("The sum is:",result) Output: Enter the first number:2 Enter the second number:3 The sum is: 5  1.2 x = int(input("Enter the first number:")) y = int(input("Enter the second number:")) result = x+ y print(f"The sum of {x} and {y} is: {result}")   Output: Enter the first number:2 Enter the second number:3 The sum of 2 and 3 is: 5 1.3   x = float(input("Enter first number:")) y = float(input("Enter second number: ")) sum = x + y print("The sum of {0} and {1} is {2}".format(x, y, sum))   Output: Enter ...
Read more