Cors request Rejected - ionic-framework

Question

I am facing an error and I don't known what to do. Whenever I try to save user to my ionic user service using the following code:
Ionic.io();
var user = Ionic.User.current();
if (user.id) {
user.set('name', username);
//user.set('image',image_name);
}
user.save();
and then I get this error:
Ionic User: Error: CORS request rejected
XMLHttpRequest cannot load https://api.ionic.io/auth/users/null.
Response for preflight has invalid HTTP status code 404
OPTIONS https:// api .ionic .io /auth /users /null
[cors request rejected][1]
[coding][2]

Answer 1

Ionic has a cordova plugin that sorts out all CORS issues called "cordova-plugin-whitelist". When you test through the browser, the Cordova plugins are not active, hence it's not sorting out your issues. Only when you deploy your app to android/ios/windows will the Cordova plugins work.
Rather get "Allow-Control-Allow-Origin" chrome plugin to allow you to make requests if you want to test on your browser.