cors allow localhost express

access-control-allow-origin nodejs express

// Add headers
app.use(function (req, res, next) {

    // Website you wish to allow to connect
    res.setHeader('Access-Control-Allow-Origin', 'http://localhost:8888');

    // Request methods you wish to allow
    res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');

    // Request headers you wish to allow
    res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type');

    // Set to true if you need the website to include cookies in the requests sent
    // to the API (e.g. in case you use sessions)
    res.setHeader('Access-Control-Allow-Credentials', true);

    // Pass to next layer of middleware
    next();
});

Posted by: Guest on July-08-2020

Source

var express = require('express') var cors = require('cors') var app = express() app.use(cors()) app.get('/products/:id', function (req, res, next) { res.json({msg: 'This is CORS-enabled for all origins!'}) }) app.listen(80, function () { console.log('CORS-enabled web server listening on port 80') })

var express = require('express') var cors = require('cors') //use this var app = express() app.use(cors()) //and this app.get('/user/:id', function (req, res, next) { res.json({user: 'CORS enabled'}) }) app.listen(5000, function () { console.log('CORS-enabled web server listening on port 5000') })

app.use(function(req, res, next) { res.header("Access-Control-Allow-Origin", "YOUR-DOMAIN.TLD"); // update to match the domain you will make the request from res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept"); next(); });

var allowedOrigins = ['http://localhost:3000', 'http://yourapp.com']; app.use(cors({ origin: function(origin, callback){ // allow requests with no origin // (like mobile apps or curl requests) if(!origin) return callback(null, true); if(allowedOrigins.indexOf(origin) === -1){ var msg = 'The CORS policy for this site does not ' + 'allow access from the specified Origin.'; return callback(new Error(msg), false); } return callback(null, true); } }));

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