Fix CORS Issue in Node.js

Fix CORS Issue in Node.js — a practical guide to Node.js CORS with clear examples you can reuse in real projects.

Fix CORS Issue in Node.js — 53/55 in the Node.js series. Full playlist companion: Node.js complete course on YouTube. Prefer one article? Read the complete Node.js tutorial.

Short description

Browsers block cross-origin API calls unless the server sends proper CORS headers. Use the `cors` package and restrict origins in production.

cors middleware

const cors = require('cors');

app.use(cors({
  origin: ['http://localhost:5173'],
  credentials: true,
}));