Tag: express

How to fix: Express.js request body is undefined.

Introduction If you are using the latest express version in Node.js then you may face the above exception while accessing HTTP request body. In the earlier versions of express, there was no such type of issue in the library. In the update of July2020, express.bodyParser() is no longer bundled as part of express. Therefore User need

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Efficient File Uploads in Express: Best Practices and Tips

Introduction To handle file uploads in an Express.js application, you can use the multer middleware. multer provides an easy way to handle multipart/form-data and process file uploads. Here’s an example of how to handle file uploads using multer in Express: In this example, the upload.single('file') middleware is used to handle a single file upload. The

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Top Node.js application frameworks

Introduction Node.js web application frameworks are becoming more popular every day. Different developers have different opinions on which framework is the best. In this blog post, we will compare five different Node.js web application frameworks: Express, Koa, Hapi, Restify, and Fastify. 1. Express  Express is one of the most popular Node.js web application frameworks and

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Download a file from Node.js Server using Express

Introduction: In this tutorial, we are create Node.js Express example that provides Rest API to download file to Client. The res.download() function transfers the file at path as an ‘attachment’. Typically, browsers will prompt the user to download. Syntax: When an error occurs or transfer is complete, the method calls the optional callback function fn. This method

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How to Use MongoDB and Mongoose with Node.js?

Introduction: MongoDB MongoDB is a NoSQL database system designed for storing and retrieving data. It is an open-source database system that uses a document-oriented data model and can handle large amounts of data. MongoDB stores data in collections, which are analogous to tables in a relational database. Each collection is composed of multiple documents, which

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Setup Express project in Node.js

Introduction: Express is one of the most widely used web application framework of Node.js. Almost every beginner creates his/her first web application in experss. Express is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications. expressjs.com This article shows how you can create a

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Body-Parser middleware in Express

Introduction: Body-parser is a Node.js body parsing middleware for Express. It is responsible for parsing the incoming request bodies in a middleware before your handlers, available under the req.body property. It provides four express middleware for parsing JSON, Raw, Text and URL encoded form data. You can install body-parser in your Express application by running

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Express Middleware: What and how to create middleware

Introduction: The Express middleware is a powerful tool for creating web applications in Node.js. It allows developers to quickly and easily add functionality to their applications by using a variety of pre-built functions. In this blog post, we will explore Express middleware and look at how to create custom middleware functions. Middleware is a function

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