How can I configure CORS headers for my web application?

How can I configure CORS headers for my web application?

To configure CORS headers, you need to set the appropriate headers in your server response. What server technology are you using?

I'm using Express.js for my Node.js application.

Great! You can use the cors middleware in Express. First, install it using npm install cors. Then, you can configure it like this: app.use(cors({ origin: 'http://example.com' }));.

Can I allow multiple origins?

Yes, you can specify an array of origins like this: app.use(cors({ origin: ['http://example1.com', 'http://example2.com'] }));.

What if I want to allow credentials?

You can allow credentials by setting the credentials option to true: app.use(cors({ origin: 'http://example.com', credentials: true }));.