Access to Script at ' from origin 'null' has been blocked by CORS policy

Question

So when I am trying to import class from another javascript file, I am getting error in console like this:

Access to Script at \'file:///home/../.../JavaScri         


        

Answer 1

ES6 modules are subject to same-origin policy. You need to run your script from a local server, open directly the file with a browser will not work.

see here ES6 module support in Chrome 62/Chrome Canary 64, does not work locally, CORS error

Answer 2

file:// requests will not work, but you can run a local webserver (polymer serve, express, etc.) to use HTTP requests instead. You could even use the following Chrome extension to run a local webserver.

https://chrome.google.com/webstore/detail/web-server-for-chrome/ofhbbkphhbklhfoeikjpcbhemlocgigb?hl=en