fetch data from mongo db and show it to react using node js

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sure! below is a step-by-step tutorial on how to fetch data from a mongodb database and display it in a react application using node.js as the backend.

prerequisites

before you start, ensure you have the following installed:

node.js
mongodb (you can use mongodb atlas for a cloud database)
basic knowledge of javascript, node.js, express, mongodb, and react

step 1: set up the node.js backend

1. *create a new directory for your project* and navigate into it:



2. **initialize a new node.js project**:



3. **install necessary packages**:



`express`: for setting up the server.
`mongoose`: for interacting with mongodb.
`cors`: to allow cross-origin requests.

4. **create the server file**:

create a file named `server.js` in the root directory:



replace `your_mongodb_connection_string` with your actual mongodb connection string.

5. **run the server**:



step 2: set up the react frontend

1. **create a new react app**:

open a new terminal window, navigate to your project directory, and run:



2. *install axios* for making http requests:



3. **create a component to fetch and display data**:

in the `src` folder, create a new file called `itemlist.js`:



4. **update the main app component**:

open `src/app.js` and modify it to include the `itemlist` component:



5. **run the react app**:

in the `client` directory, run:



step 3: testing the application

1. make sure your node.js server is running.
2. ensure your mongodb database has some items in it. you can use a mongodb client like mongodb compass or the mongodb shell to insert data.
3. open your browser and go to `http://localhost:3000`. you should see the list of items fetched from your mongodb database.

conclusion

you have now created a basic application that fetches data from a mongodb database using a node.js backend and displays it in a react frontend. you can expand this application by adding more features like creat ...

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