user1336103 user1336103 - 1 year ago 116
Node.js Question

No 'Access-Control-Allow-Origin' - Node / Apache Port Issue

i've created a small API using Node/Express and trying to pull data using Angularjs but as my html page is running under apache on localhost:8888 and node API is listen on port 3000, i am getting the No 'Access-Control-Allow-Origin'. I tried using node-http-proxy and Vhosts Apache but not having much succes, please see full error and code below.

"XMLHttpRequest cannot load localhost:3000. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'localhost:8888' is therefore not allowed access."

// Api Using Node/Express
var express = require('express');
var app = express();
var contractors = [
"id": "1",
"name": "Joe Blogg",
"Weeks": 3,
"Photo": "1.png"


app.get('/', function(req, res) {
app.listen(process.env.PORT || 3000);
console.log('Server is running on Port 3000')

// Angular code
angular.module('contractorsApp', [])
.controller('ContractorsCtrl', function($scope, $http,$routeParams) {

$http.get('localhost:3000').success(function(data) {

$ = data;


<body ng-app="contractorsApp">
<div ng-controller="ContractorsCtrl">
<li ng-repeat="person in contractors">{{}}</li>

Answer Source

Try adding the following middleware to your NodeJS/Express app (I have added some comments for your convenience):

// 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

Hope that helps!

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