Mongo with Express Tutorial Last Updated : 15 Apr, 2025 Summarize Comments Improve Suggest changes Share Like Article Like Report MongoDB and ExpressJS are a powerful pair for web development. MongoDB provides flexible data storage, while ExpressJS simplifies server-side logic. Together, they make it easy to create modern web applications efficiently. MongoDB's document-based approach and ExpressJS's streamlined backend development make it straightforward to build powerful web apps. This combination opens up vast opportunities in the web development landscape. Table of Content What is MongoDB?What is ExpressJS?Why learn Mongo With Express?Advantages of using Mongo with ExpressMongoDB Basic ConceptMongoDB InstallationMongoDB MethodsMongoDB OperatorsWorking with Documents and CollectionsIndexing in MongoDBMongoDB Questions:MongoDB AdvanceExpressJS Basic ConceptExpressJS MethodsImportant ExpressJS PackagesExpress Advanced ConceptsWhat is MongoDB?MongoDB is a modern database that stores data in a flexible, document-based format. It's like a digital filing system where information is stored in containers called documents, which can hold different types of data. MongoDB is known for its speed in retrieving information and its ability to adapt to changing needs, making it a popular choice for a wide range of applications. What is ExpressJS?Express is a small framework that works on top of Node web server functionality to simplify its APIs and add helpful new features. It makes it easier to organize your application’s functionality with middleware and routing. It adds helpful utilities to Node HTTP objects and facilitates the rendering of dynamic HTTP objects. Why learn Mongo With Express?To learn MongoDB with Express provides you with the tools to create dynamic and scalable web applications. MongoDB's flexible document-based structure allows for easy adaptation to changing project needs, while ExpressJS simplifies the process of building robust server-side logic. By mastering these technologies, you gain the skills necessary to develop high-performance applications and access a wide range of career opportunities in web development. Advantages of using Mongo with Express:Flexibility: MongoDB's schema-less design allows for flexible data storage, making it easier to iterate on your application's data model.Scalability: MongoDB's horizontal scalability and sharding capabilities make it suitable for handling large volumes of data and high traffic loads.JSON-like Documents: MongoDB stores data in JSON-like documents, which align well with JavaScript and make integration with Express seamless.Performance: MongoDB's NoSQL architecture and indexing capabilities enable fast read and write operations, improving overall application performance.Developer Productivity: MongoDB's simplicity and ease of use, combined with Express's minimalist framework, can accelerate development cycles and reduce time to market.Community Support: Both MongoDB and Express have large and active communities, providing extensive documentation, tutorials, and support resources for developers.MongoDB Basic Concept:IntroductionDatabase, Collection, and DocumentMongoDB CursorDataTypes in MongoDBWhat is ObjectId in MongoDBWhat is a MongoDB Query?Create a Database using MongoShellDelete Database using MongoShellCRUD operationsMongoDB InstallationHow to Install and Configure MongoDB in Ubuntu?How to install MongoDB on MacOS?How to install MongoDB on Windows?MongoDB Methods:Insert() MethodinsertOne() MethodinsertMany() MethodBulk.insert() MethodbulkWrite() MethodUpdate() MethodupdateOne() MethodupdateMany() MethodFind() MethodFindAndModify() Methodsort() MethodcopyTo() Methodcount() MethodcountDocuments() Methoddrop() MethodRemove() MethoddeleteOne() MethodgetIndexes() MethoddropIndex() MethoddropIndexes() MethodMongoDB OperatorsComparison OperatorsComparison Query Operators$cmp OperatorGreater than Operator $gtLess than Operator $ltEquality Operator $eqLess than equals to Operator $lteGreater than equals to Operator $gteInequality Operator $ne$in Operator$nin OperatorLogical OperatorsLogical Query OperatorsAND operator ( $and )OR operator ( $or )NOT operator ( $not )NOR operator ( $nor )Arithmetic Operators$add Operator$subtract Operator$multiply Operator$divide Operator$abs Operator$floor Operator$ceil Operator$mod Operator$sqrt Operator$pow Operator$exp Operator$log Operator$log10 Operator$ln OperatorField Update OperatorsField Update OperatorsMaximum operator ( $max )Minimum operator ( $min )Increment Operator ( $inc )Multiply Operator ($mul)Rename Operator ($rename)Current Date Operator ($currentDate)SetOnInsert Operator ($setOnInsert)Bitwise Update OperatorArray Expression Operators$isArray Operator$size Operator$arrayElemAt Operator$concatArrays Operator$reverseArray OperatorArray Update Operators$pull Operator$pop Operator$pullAll Operator$push OperatorPositional Operator ($)All Positional Operator ($[])$position Modifier$addToSet Operator$each Modifier$sort Modifier$slice ModifierString Expression Operators$concat Operator$strcasecmp Operator$toUpper Operator$toLower Operator$substrCP (aggregation) operator in MongoDBWorking with Documents and CollectionsDefining, Creating, and Dropping a MongoDB collectionAdding and Querying the data in MongoDBHow to Create Database & Collection in MongoDBQuery Documents using Mongo ShellInsert Single Document Using MongoShellInsert Multiple Document Using MongoShellUpdate Single Document Using MongoShellUpdate Multiple Documents Using MongoShellReplace Documents Using MongoShellDelete Single Document Using MongoShellDelete Multiple Documents Using MongoShellCheck the existence of the fields in the specified collectionSorting Documents in MongoDBCapped Collections in MongoDBIndexing in MongoDBIndexing in MongoDBIndex TypesCompound IndexesText IndexesMultikey IndexesMongoDB Questions:What is a MongoDB Query?How MongoDB works ?How to get multiple requests with ExpressJS ?How to Create Database & Collection in MongoDB?How to Back Up and Restore a MongoDB Database?How to push data in a MongoDB document ?How to Deploy MongoDB App to Heroku?How to write a function to get rows from database by multiple columns conditionally ?How to check if a string is valid MongoDB ObjectId in Node.js ?How to connect MongoDB with ReactJS ?How to Connect Node to a MongoDB Database ?MongoDB AdvanceExport data from MongoDBImport data to MongoDBRegexProjectionEmbedded DocumentsQuery Embedded Documents Using Mongo ShellAggregation in MongoDBHow to Enable Authentication on MongoDB?Create a user and add a role in MongoDBReplication and ShardingBackup and RestorationExpressJS Basic Concept:Introduction to ExpressSteps to create Express ApplicationDesign first Application using ExpressHow to Structure my Application in Express JS Unique features of ExpressHow to send response from server to client using Node and Express ?Why Express ‘app’ and ‘server’ files kept separately ?How to implement JWT authentication in Express appHow to expire session after 1 min of inactivity in express-session of Express JSExpress Error HandlingExpressJS Methods:Express express():express.json() Functionexpress.raw() Functionexpress.Router() Functionexpress.static() Functionexpress.text() Functionexpress.urlencoded() Functionexpress() function Complete ReferenceExpress Applications Function:app.locals Propertyapp.mountpath PropertyMount Eventapp.all() Functionapp.delete() Functionapp.disable() Functionapp.disabled() Functionapp.enable() Functionapp.enabled() FunctionApplication Complete ReferenceExpress Requests Function:req.app Propertyreq.baseUrl Propertyreq.body Propertyreq.cookies Propertyreq.fresh Propertyreq.accepts() Functionreq.acceptsCharsets() Functionreq.acceptsEncodings() Functionreq.acceptsLanguages() FunctionRequest Complete ReferenceExpress Response Function:res.app Propertyres.headersSent Propertyres.locals Propertyres.append() Functionres.attachment() Functionres.cookie() Functionres.clearCookie() Functionres.download() Functionres.end() FunctionResponse Complete ReferenceExpress Router Function:router.all() Functionrouter.METHOD() Functionrouter.param() functionrouter.route() Functionrouter.use() FunctionRouter Complete ReferenceImportant ExpressJS Packages:body-parsercookie-parserexpress-sessionmorganhelmetcorsdotenvExpress Advanced Concepts:Node vs ExpressMiddlewares in ExpressHow to update record in Cassandra using Express What is the use of next() function in Express JSHow to create custom middleware in expressWhy Express is used in Web DevelopmentWhat is Express GeneratorExpress HTTP methodsHow to create routes using Express and Postman?Why Express Is Used For Enterprise App DevelopmentREST API using the Express to perform CRUDWhat is express-session middleware in Express Middleware & MongoDB | Web Development Comment More infoAdvertise with us Next Article How to Install MongoDB on Windows? F faheemakt6ei Follow Improve Article Tags : MERN Stack Mongoose Similar Reads MERN Stack The MERN stack is a widely adopted full-stack development framework that simplifies the creation of modern web applications. Using JavaScript for both the frontend and backend enables developers to efficiently build robust, scalable, and dynamic applications.What is MERN Stack?MERN Stack is a JavaSc 9 min read MERN Full Form MERN Stack is a JavaScript Stack that is used for easier and faster deployment of full-stack web applications. The full form of MERN includes four powerful technologies:MongoDBExpress.jsReact.jsNode.jsThese technologies together provide a full-stack JavaScript framework for developing modern, dynami 2 min read How to Become a MERN Stack Developer? Do you also get amazed at those beautiful websites that appear in front of you? Those are designed by none other than Full-Stack Developers Or MERN stack developers. They are software developers who specialize in building web applications using the MERN stack, which is a popular set of technologies 6 min read Difference between MEAN Stack and MERN Stack Web development is a procedure or process for developing a website. A website basically contains three ends: the client side, the server side, and the database. These three are different sides of an application that combine together to deliver an application; all ends are implemented separately with 3 min read Best Hosting Platforms for MERN Projects Hosting your website grants you the thrilling opportunity to showcase it to the world. Whether you choose free or paid hosting, the process of deploying your website fills you with a mix of excitement, pride, and nervousness. You eagerly await user feedback, enthusiastically embracing the chance to 5 min read Getting Started with React & FrontendReact IntroductionReactJS is a component-based JavaScript library used to build dynamic and interactive user interfaces. It simplifies the creation of single-page applications (SPAs) with a focus on performance and maintainability.It is developed and maintained by Facebook.The latest version of React is React 19.Uses 8 min read React Environment SetupTo run any React application, we need to first setup a ReactJS Development Environment. In this article, we will show you a step-by-step guide to installing and configuring a working React development environment.Pre-requisite:We must have Nodejs installed on our PC. So, the very first step will be 3 min read React ComponentsIn React, React components are independent, reusable building blocks in a React application that define what gets displayed on the UI. They accept inputs called props and return React elements describing the UI.In this article, we will explore the basics of React components, props, state, and render 4 min read ReactJS Props - Set 1The react props refer to properties in react that are passed down from parent component to child to render the dynamic content.Till now we have worked with components using static data only. In this article, we will learn about react props and how we can pass information to a Component.What are Prop 5 min read ReactJS StateIn React, the state refers to an object that holds information about a component's current situation. This information can change over time, typically as a result of user actions or data fetching, and when state changes, React re-renders the component to reflect the updated UI. Whenever state change 4 min read React FormsForms are an essential part of any application used for collecting user data, processing payments, or handling authentication. React Forms are the components used to collect and manage the user inputs. These components include the input elements like text field, check box, date input, dropdowns etc. 5 min read React ListsReact Lists are used to display a collection of similar data items like an array of objects and menu items. It allows us to dynamically render the array elements and display repetitive data.Rendering List in ReactTo render a list in React, we will use the JavaScript array map() function. We will ite 5 min read Create ToDo App using ReactJSIn this article, we will create a to-do app to understand the basics of ReactJS. We will be working with class based components in this application and use the React-Bootstrap module to style the components. This to-do list can add new tasks we can also delete the tasks by clicking on them. The logi 3 min read Redux Setup and basicsIntroduction to Redux (Action, Reducers and Store)Redux is a state managing library used in JavaScript apps. It simply manages the state of your application or in other words, it is used to manage the data of the application. It is used with a library like React.Uses: It makes easier to manage state and data. As the complexity of our application in 4 min read Redux and The Flux ArchitectureFlux Architecture: Flux is AN architecture that Facebook uses internally when operating with React. It is not a framework or a library. It is merely a replacement quite an architecture that enhances React and also the idea of unidirectional data flow. Redux is a predictable state container for JavaS 5 min read React Redux Hooks: useSelector and useDispatch.State management is a major aspect of building React applications, allowing users to maintain and update application state predictably. With the introduction of React Hooks, managing state has become even more streamlined and efficient. Among the most commonly used hooks for state management in Reac 4 min read What are Action's creators in React Redux?In React Redux, action creators are functions that create and return action objects. An action object is a plain JavaScript object that describes a change that should be made to the application's state. Action creators help organize and centralize the logic for creating these action objects.Action C 4 min read What is Redux Thunk?Redux Thunk is like a co-worker for Redux, giving it the power to handle asynchronous actions. It's that extra tool that allows your Redux store to deal with things like fetching data from a server or performing tasks that take some time. With Redux Thunk, your app can smoothly manage both synchrono 3 min read Creating custom middlewares in React ReduxIn React-Redux applications, managing the flow of data is crucial for building efficient and scalable apps. Redux provides a powerful state management solution, and custom middleware adds an extra layer of flexibility to handle complex scenarios effectively. Let's understand custom middleware in sim 5 min read Common middleware libraries used in ReduxMiddleware libraries play a crucial role in Redux applications, enabling users to extend and enhance Redux's capabilities. The middleware libraries offer a wide range of capabilities and cater to different use cases and preferences. users can choose the middleware that best fits their requirements a 5 min read Express and Mongo SetupMongo with Express TutorialMongoDB and ExpressJS are a powerful pair for web development. MongoDB provides flexible data storage, while ExpressJS simplifies server-side logic. Together, they make it easy to create modern web applications efficiently. MongoDB's document-based approach and ExpressJS's streamlined backend develo 5 min read How to Install MongoDB on Windows?Looking to install MongoDB on your Windows machine? This detailed guide will help you install MongoDB on Windows (Windows Server 2022, 2019, and Windows 11) quickly and efficiently. Whether you are a developer or a beginner, follow this guide for seamless MongoDB installation, including setting up e 6 min read How to Install Express in a Node Project?ExpressJS is a popular, lightweight web framework for NodeJS that simplifies the process of building web applications and APIs. It provides a robust set of features for creating server-side applications, including routing, middleware support, and easy integration with databases and other services.Be 2 min read Mongoose Module IntroductionMongoose is a popular Object Data Modeling (ODM) library for MongoDB and Node.js. It provides a straightforward and structured way to interact with MongoDB, allowing you to define schemas for your collections, apply constraints, and validate data before storing it in the database. In this guide, we' 5 min read Mongoose ConnectionsA Mongoose connection is a Node.js module that establishes and manages connections between a Node.js application and a MongoDB database. It optimizes resource utilization, handles connection pooling, and manages errors, facilitating efficient data operations.What is Mongoose Connection?A Mongoose co 6 min read How to Connect MongoDB with a Node.js Application using MongooseJSMongoose is a powerful MongoDB object modeling library for Node.js enabling you to easily interact between your Node.js app and MongoDB. In this article we are going to explore how you can connect your Node.js app to MongoDB using MongooseJS. You will learn how to create a connection, specify schema 4 min read Node.js CRUD Operations Using Mongoose and MongoDB AtlasCRUD (Create, Read, Update, Delete) operations are fundamental in web applications for managing data. Mongoose simplifies interaction with MongoDB, offering a schema-based approach to model data efficiently. MongoDB Atlas is a fully managed cloud database that simplifies the process of setting up, m 8 min read Signup Form Using Node.js and MongoDBInstallations First, we need to include a few packages for our Nodejs application. npm install express --save Express allows us to set up middlewares to respond to HTTP Requests. npm install body-parser --save If you want to read HTTP POST data , you have to use the "body-parser" node module. npm in 3 min read API Routing and AuthenticationRouting in NodeJSRouting is the process of deciding how a server should respond to different requests made by users. When you visit a website or use an app, your browser sends a request to the server. Routing determines how the server handles these requests based on the URL you visit and the type of request (such as 3 min read How to create routes using Express and Postman?In this article we are going to implement different HTTP routes using Express JS and Postman. Server side routes are different endpoints of a application that are used to exchange data from client side to server side.Express.js is a framework that works on top of Node.js server to simplify its APIs 3 min read Difference between application level and router level middleware in Express?If you’ve used Express even a little, you know how important middleware is. Those little functions run on every request and let you do stuff like logging, authentication, file uploads, and more. In this article, we will see what is Application-level middleware and Router-level middleware and what ar 3 min read JWT Authentication In Node.jsIn modern web development, ensuring secure and efficient user authentication is paramount. JSON Web Tokens (JWT) offer a robust solution for token-based authentication, enabling secure transmission of user information between parties. This article provides a step-by-step approach to implementing JWT 3 min read How To Implement JWT Authentication in Express App?Authentication is important in web apps to make sure only the right people can access certain pages or information. It helps keep user data safe and prevents unauthorized access. Implementing JSON Web Token (JWT) authentication in an Express.js application secures routes by ensuring that only authen 6 min read Postman- Backend TestingIntroduction to Postman for API DevelopmentPostman: Postman is an API(application programming interface) development tool that helps to build, test and modify APIs. Almost any functionality that could be needed by any developer is encapsulated in this tool. It is used by over 5 million developers every month to make their API development eas 7 min read Basics of API Testing Using PostmanAPIs(Application Programming Interfaces) are very commonly used in development. Postman is a tool that can be used for API Testing. In this article, we will learn how to do simple API Testing using Postman. Go to your workspace in Postman.Click on the + symbol to open a new tab.Enter the API Endpoin 2 min read How to use postman for testing express applicationTesting an Express app is very important to ensure its capability and reliability in different use cases. There are many options available like Thunder client, PAW, etc but we will use Postman here for the testing of the Express application. It provides a great user interface and numerous tools whic 3 min read How to send different types of requests (GET, POST, PUT, DELETE) in Postman.In this article, we are going to learn how can we send different types of requests like GET, POST, PUT, and DELETE in the Postman. Postman is a popular API testing tool that is used to simplify the process of developing and testing APIs (Application Programming Interface). API acts as a bridge betwe 5 min read How to test GET Method of express with Postman ?The GET method is mainly used on the client side to send a request to a specified server to get certain data or resources. By using this GET method we can only access data but can't change it, we are not allowed to edit or completely change the data. It is widely one of the most used methods. In thi 2 min read How to test POST Method of Express with Postman?The POST method is a crucial aspect of web development, allowing clients to send data to the server for processing. In the context of Express, a popular web framework for Node, using the POST method involves setting up routes to handle incoming data. In this article, we'll explore how to test the PO 2 min read How to test DELETE Method of Express with Postman ?The DELETE method is an essential part of RESTful web services used to remove specific resources from a server. Whether you are building a simple API or a complex web application, knowing how to use this method effectively is key. Here, we will explore how to Implement the DELETE method in Express.j 3 min read How to create and write tests for API requests in Postman?Postman is an API(utility programming interface) development device that enables to construct, take a look at and alter APIs. It could make numerous varieties of HTTP requests(GET, POST, PUT, PATCH), store environments for later use, and convert the API to code for various languages(like JavaScript, 3 min read Like