Express

1 post tagged “Express”.

A browser window and a server rack side by side, showing the frontend and backend as separate parts that need connecting.

technology8 min read

How to Connect React to a Backend API (CORS, Fetch, MongoDB)

React doesn't talk to your API; the browser does. Build an Express server, fetch data in React, fix the CORS error with one line of middleware, and keep data in a free MongoDB Atlas M0 cluster.

24 October 2026Arnab Biswas

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