uploading files with react nodejs and multer

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uploading files in a web application is a common requirement, and using react for the frontend and node.js with express and multer for the backend is a popular approach. this tutorial will guide you through the steps to create a simple file upload system using these technologies.

prerequisites

- basic knowledge of javascript and react
- node.js and npm installed on your machine
- a code editor (like visual studio code)

project structure

we'll create a simple project structure:
step 1: set up the backend

1. **create the server directory**

open your terminal and create the server directory:



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

initialize a new node.js project:



3. **install required packages**

install express and multer:



- `express`: a web framework for node.js.
- `multer`: a middleware for handling `multipart/form-data`, which is used for uploading files.
- `cors`: a package to allow cross-origin resource sharing.

4. **create the server code**

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



5. **create the uploads directory**

create a directory named `uploads` in the `server` directory:



step 2: set up the frontend

1. **create the client directory**

go back to the root of your project and create the client directory:



2. **install axios**

install axios for making http requests:



3. **create the file upload component**

open the `src` directory and create a file named `fileupload.js`:



4. **use the fileupload component in app.js**

open `src/app.js` and use the `fileupload` component:



step 3: run the application

1. **start the server**

open a terminal, navigate to the `server` directory, and run:



you should see a message indicating that the server is running.

2. **start the client**

in another terminal, navigate to the `client` directory and run:



this will start the react application, and it should automatically open in your ...

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Видео uploading files with react nodejs and multer канала CodeLearn