Is JavaScript for Server-side Development in 2023 good? Detailed Info

JavaScript for Server-side Development: This tutorial would cover how to use JavaScript on the server-side using technologies such as Node.js and Express. It would also cover how to interact with databases and create RESTful APIs.

JavaScript is not just limited to client-side web development, but it can also be used on the server side to create powerful applications. With Node.js, developers can build server-side applications with JavaScript, and with Express, they can create scalable and efficient RESTful APIs.

Node.js: JavaScript for Server-side Development

Node.js is a cross-platform runtime environment that allows developers to run JavaScript code on the server-side. It has a vast community of developers who contribute to its library of packages, known as NPM (Node Package Manager). This makes it easy to add functionality to Node.js applications, such as database connectivity, authentication, and more.

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Express: JavaScript for Server-side Development

Express is a popular web framework for Node.js that makes it easy to create RESTful APIs. REST stands for REpresentational State Transfer and is a popular architectural style for creating web services. RESTful APIs allow clients to access data from the server by making HTTP requests to a specific endpoint.

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To start using Node.js and Express, you need to install Node.js on your computer and create a new project folder. You can then use NPM to install Express as a dependency for your project. Once you have installed Express, you can create a new Express application by writing a few lines of code.

Here is an example of a simple Express application that returns “Hello World” when the root endpoint is accessed:

const express = require('express'); const app = express();

app.get('/', (req, res) => { res.send('Hello World'); });

app.listen(3000, () => { console.log('Server started on port 3000'); });

In this example, we first import the express module and create a new Express application. Then, we use the get() method to handle a GET request to the root endpoint. The method takes two arguments: req (request) and res (response). We use the send() method on the response object to send the “Hello World” message to the client.

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Database for Server-side Development

Finally, we use the listen() method to start the server on port 3000. When the server is started, we log a message to the console to confirm that it is running.

To interact with databases, you can use NPM packages such as MongoDB and Mongoose. MongoDB is a popular NoSQL database that stores data in a JSON-like format, and Mongoose is a library for MongoDB that provides a simple and elegant way to interact with the database.

With Mongoose, you can define the schema for your data, perform CRUD (Create, Read, Update, Delete) operations, and more. Here is an example of how to create a new document in the database using Mongoose:

const mongoose = require('mongoose'); mongoose.connect('mongodb://localhost/test', { useNewUrlParser: true }); 

const Cat = mongoose.model('Cat', { name: String });

const kitty = new Cat({ name: 'Kitty' }); kitty.save().then(() => console.log('Cat saved'));

In this example, we first import the mongoose module and connect to the MongoDB database. Then, we define a model for the Cat data with a name property. Finally, we create a new instance of the Cat model and save it to the database. The save() method returns a Promise that resolves when the document is saved, and we log a message to the console to confirm that it was successful.

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In conclusion, JavaScript is a versatile language that can be used for both client-side and server-side development

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