AWT-LAB-V-SEM

Lab Record: Setup Node.js Development Environment and Running Sample Console Programs

Setup Instructions

Step 1: Install Node.js

1. Visit the Node.js official website.
2. Download the latest LTS (Long Term Support) version for your operating system.
3. Run the installer and follow the on-screen instructions to complete the installation.

Step 2: Verify Installation

1. Open a terminal or command prompt.

2. Type the following command to check the Node.js version:

   node -v
   

3. Type the following command to check the npm version:

   npm -v
   

4. Ensure that both commands return version numbers, confirming successful installation.

Step 3: Create a Sample Console Program

1. Open your text editor/IDE.
2. Create a new file named hello.js.

3. Write the following code in hello.js:

   console.log('Hello, World!');
   

Step 4: Run the Sample Program

1. Open a terminal or command prompt.
2. Navigate to the directory where hello.js is located using the cd command.

3. Run the program with the following command:

   node hello.js
   

4. You should see the output:

   Hello, World!
   

Sample Console Programs

You can try modifying the hello.js file or creating new JavaScript files with the following examples:

1. Addition Program:

   const a = 5;
   const b = 10;
   console.log('The sum is: ' + (a + b));
   

2. User Input Program (using the readline module):

   const readline = require('readline').createInterface({
       input: process.stdin,
       output: process.stdout
   });
   
   readline.question('What is your name? ', (name) => {
       console.log(`Hello, ${name}!`);
       readline.close();
   });
   

Output:

Hello, World!
The sum is: 15
What is your name? Gautam Ankoji
Hello, Gautam Ankoji!