Express JS: No 'Access-Control-Allow-Origin' header is present on the requested resource

Question

I have an API running on a server and a front-end client connecting to it to retrieve data. I did some research on the cross domain problem and has it working. However I\'ve

Answer 1

Check your server.js file. It should look like the example below:

const express = require('express');
const bodyParser = require('body-parser');
var cors = require('cors');
const mongoose = require('mongoose');
// create express app
const app = express();

// parse application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({ extended: true }))

// parse application/json
app.use(bodyParser.json())

app.use(cors());