This command creates a package.json file that tracks your project’s dependencies and configuration.<\/p>\n
Step 2 Write Your Application Code:<\/h4>\n
Create a new file, \u2018app.js\u2019, in your project folder.<\/p>\n
Open \u2018app.js\u2019 in your preferred text editor or integrated development environment (IDE) and add the following code:<\/p>\n
const http = require('http');\n \nconst server = http.createServer((req, res) => {\n \/\/ Set the response headers\n res.writeHead(200, { 'Content-Type': 'text\/plain' });\n \n \/\/ Send a response to the client\n res.end('Hello, World!');\n});\n \nconst port = 3000;\nserver.listen(port, () => {\n console.log(`Server is running on http:\/\/localhost:${port}`);\n});\n<\/pre>\nIn this code, we import the \u2018http\u2019 module and use its \u2018createServer\u2019 method to create an HTTP server. The server object listens for incoming requests and responds with the message “Hello, World!”.<\/p>\n
We set the response headers using \u2018res.writeHead\u2019 with a status code of \u2018200\u2019 and the content type as \u2018text\/plain\u2019. Finally, we send the response back to the client using \u2018res.end\u2019.<\/p>\n
The server listens on port 3000 using the \u2018listen\u2019 method. The callback function is executed once the server starts, and it logs a message to the console indicating that the server is running.<\/p>\n
Step 3 Run Your Application:<\/h4>\n
1. Open a command prompt or terminal and navigate to your project folder.<\/p>\n
2. Start your application by running the following command:<\/p>\n
node app.js\n<\/pre>\n3. Open your web browser and visit http:\/\/localhost:3000. You should see the message “Hello, World!” displayed on the page.<\/p>\n
![\"NodeJS](\"https:\/\/techvidvan.com\/tutorials\/wp-content\/uploads\/sites\/2\/2023\/08\/NodeJS-First-Application-output-1.webp\")
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