How to enable Access-Control-Allow-Origin for angular 5/nodejs?

Question

Read many ways for including of \'Access-Control-Allow-Origin\' and none worked for me.

I use @angular/common/http module and external url as data source. by the att

Answer 1

You mentioned webpack-dev-server, which of course can handle CORS since it's using express behind the scenes. In your webpack config

devServer: {
  headers: {
    "Access-Control-Allow-Origin": "*",
    "Access-Control-Allow-Methods": "GET, POST, PUT, DELETE, PATCH, OPTIONS",
    "Access-Control-Allow-Headers": "X-Requested-With, content-type, Authorization"
  }
},