Express.js

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Top 50+ ExpressJS Interview Questions and Answers

Last Updated: 01 March 2025

ExpressJS is a fast, unopinionated, and minimalist web framework for NodeJS, widely used for building scalable and efficient server-side app...read more

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How To Implement JWT Authentication in Express App?

Last Updated: 17 February 2025

Authentication is important in web apps to make sure only the right people can access certain pages or information. It helps keep user data ...read more

Middleware in Express

Last Updated: 10 April 2025

Middleware in Express refers to functions that process requests before reaching the route handlers. These functions can modify the request a...read more

ExpressJS-Middlewares

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How to Implement Search and Filtering in a REST API with Node.js and Express.js ?

Last Updated: 07 January 2025

Search and filtering are very basic features that an API must possess to serve data to the client application efficiently. By handling these ...read more

Last Updated: 07 January 2025

Node.js and Express are two essential tools in the JavaScript ecosystem, especially for server-side development. While they are often used t ...read more

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Express req.query Property

Last Updated: 11 April 2025

The req.query property in Express allows you to access the query parameters from the URL of an incoming HTTP request. Query parameters are t...read more

Express res.locals Property

Last Updated: 08 January 2025

The `res.locals` property is an object that holds response local variables specific to the current request. It has a scope limited to the re...read more

Express.js res.download() Function

Last Updated: 08 January 2025

The res.download() function transfers the file at the path as an 'attachment'. Typically, browsers will prompt the user to download.Syntax:r ...read more

Express res.status() Function

Last Updated: 07 January 2025

The res.status() function sets the HTTP status for the response. It is a chainable alias of Node’s response.statusCode.Syntax:res.status( ...read more

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Express res.cookie() Function

Last Updated: 12 April 2025

The res.cookie() function is used to set a cookie in the client's browser. It allows you to assign a cookie by providing a name and a value....read more

Express express.static() Function

Last Updated: 07 April 2025

In Express.js, serving static files like images, CSS, and JavaScript used to require custom routes. With the express.static() function, you ...read more

Express app.delete() Function

Last Updated: 08 January 2025

The `app.delete()` function is utilized to handle HTTP DELETE requests for a specified path. It takes the path as a parameter and also accep...read more

Express app.use() Function

Last Updated: 12 April 2025

The app.use() function in Express.js adds middleware to the application's request-processing pipeline. It applies the specified middleware t...read more

Express app.get() Request Function

Last Updated: 25 April 2025

The app.get() function is used to define routes on your server that handle HTTP GET requests. A GET request is typically used when the clien...read more

Express app.post() Function

Last Updated: 07 January 2025

The app.post() function in Express.js handles HTTP POST requests to a specific route. It defines a callback function to process incoming dat...read more

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