How to use a proxy in React.js?

by cameron_walter , in category: SEO Tools , 3 months ago

How to use a proxy in React.js?

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1 answer

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by delpha , 3 months ago

@cameron_walter 

To use a proxy in React.js, you can configure it in the development server settings or by using a package like HTTP-proxy-middleware. Here are the steps to follow:

  1. Using the development server settings: a. Create a new file setupProxy.js in the src folder of your React.js project. b. Inside setupProxy.js, write the following code: const proxy = require('http-proxy-middleware'); module.exports = function(app) { app.use(proxy('/api', { target: 'http://localhost:5000' })); }; This code sets up a proxy for requests starting with /api and redirects them to http://localhost:5000. You can modify the target URL as per your requirements. c. Start your React.js development server using npm start. Requests that start with /api will now be proxied to the specified target URL.
  2. Using the HTTP-proxy-middleware package: a. Install the package by running the following command in your project directory: npm install http-proxy-middleware --save b. Create a new file, for example, proxy.js in the src folder of your React.js project. c. Inside proxy.js, write the following code: const { createProxyMiddleware } = require('http-proxy-middleware'); module.exports = function(app) { app.use( '/api', createProxyMiddleware({ target: 'http://localhost:5000', changeOrigin: true, }) ); }; This code sets up a proxy for requests starting with /api and redirects them to http://localhost:5000. You can modify the target URL as per your requirements. d. Open your package.json file and add the following line inside the "scripts" object (if it's not already there): "proxy": "http://localhost:5000", This tells your React.js app to proxy requests to the specified URL. e. Start your React.js development server using npm start. Requests that start with /api will now be proxied to the specified target URL.


By setting up a proxy in React.js, you can avoid cross-origin resource sharing (CORS) issues when making API requests from your development server.