How to Enable CORS from Nodejs server

Question

I am using react to send data to my API. Every POST request I make gives me an OPTIONS request, and I need to fix this. I think I might need to do some preflight structure but a

Answer 1

The browser sends a preflight Options requests to the server to check if CORS is enabled on the server. To enable cors on the server side add this to your server code

app.use(function(req, res, next) {
        res.header("Access-Control-Allow-Origin", "*");
        res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
        next();
    });