Example 1: 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();
});
Example 2: node express cors headers
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')
})
Example 3: 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')
})
Example 4: nodejs CORS policy
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();
});
app.get('/', function(req, res, next) {
// Handle the get for this route
});
app.post('/', function(req, res, next) {
// Handle the post for this route
});
Example 5: cors npm
/*
Installation
$ npm install cors
*/
// Simple Usage (Enable All CORS Requests)
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");
});
Example 6: cors npm
installation :
$ npm i cors
usage :
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')
})