How to solve CORS problems in Express? #Express #node #CORS Source: https://www.udemy.com/nodejs-the-complete-guide/learn/v4/t/lecture/12087628?start=15

solve_CORS.js

// In the entry file often index.js or app.js

const express = require('express')
const app = express()

app.use((req, res, next) => {
  res.setHeader('Access-Control-Allow-Origin', '*') // The second parámeter could be a list of domains
  res.setHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, PATCH, DELETE')
  res.setHeader('Access-Control-Allow-Headers', 'Content-Type, Authorization')
  next()
})