Cors in express

Express js cors

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')
})

Cors in express

const cors = require('cors');

const corsOption = {
    origin: ['http://localhost:3000'],
};
app.use(cors(corsOption));
//if you want in every domain then
app.use(cors())

Allow cors express

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();
});

Express js cors

//Cors = Cross-origin resource sharing

var express = require('express');
var cors = require('cors');
var app = express();

app.use(cors());

var corsOptions = {
  origin: 'http://example.com',
  optionsSuccessStatus: 200 // some legacy browsers (IE11, various SmartTVs) choke on 204
}

app.listen(80, function () {
  console.log('CORS-enabled web server listening on port 80')
})

Source: expressjs.com

Cors error in node js express

var cors = require('cors')

var app = express()
app.use(cors())

Express cors error

// CORS (Cross-Origin Resource Sharing) headers to support Cross-site HTTP requests

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

-1

Source: stackoverflow.com

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