This is a page demonstrating CORS

The cross domain server configuration can be found here.

The source code can be found on github.

Test cases

<script async="" type="module" src="https://cors-server.netlify.app/js-whitelist/module.js" crossorigin="use-credentials"></script>
<script async="" type="module" src="https://cors-server.netlify.app/js-whitelist/module.js" crossorigin="anonymous"></script>
<script async="" type="module" src="https://cors-server.netlify.app/js-whitelist/module.js" crossorigin=""></script>
<script async="" type="module" src="https://cors-server.netlify.app/js-whitelist/module.js"></script>
<script async="" src="https://cors-server.netlify.app/js-whitelist/main.js" crossorigin="anonymous"></script>
<script async="" src="https://cors-server.netlify.app/js-whitelist/main.js"></script>
<script async="" type="module" src="https://cors-server.netlify.app/js-public/module.js" crossorigin="anonymous"></script>
<script async="" type="module" src="https://cors-server.netlify.app/js-public/module.js"></script>
<script async="" src="https://cors-server.netlify.app/js-public/main.js" crossorigin="anonymous"></script>
<script async="" src="https://cors-server.netlify.app/js-public/main.js"></script>
<script async="" type="module" src="https://cors-server.netlify.app/js/module.js" crossorigin="anonymous"></script>
<script async="" type="module" src="https://cors-server.netlify.app/js/module.js"></script>
<script async="" src="https://cors-server.netlify.app/js/main.js" crossorigin="anonymous"></script>
<script async="" src="https://cors-server.netlify.app/js/main.js"></script>
<script async="" type="module" src="./js/module.js"></script>
<script async="" src="./js/main.js"></script>

    Logs
  https://cors-example.netlify.app/js/module.js is running
<script async="" type="module" src="./js/module.js"></script> got load
https://cors-example.netlify.app/js/main.js is running
<script async="" src="./js/main.js"></script> got load
<script async="" type="module" src="https://cors-server.netlify.app/js/module.js" crossorigin="anonymous"></script> got error
<script async="" type="module" src="https://cors-server.netlify.app/js/module.js"></script> got error
<script async="" type="module" src="https://cors-server.netlify.app/js-whitelist/module.js"></script> got error
<script async="" type="module" src="https://cors-server.netlify.app/js-whitelist/module.js" crossorigin="use-credentials"></script> got error
<script async="" type="module" src="https://cors-server.netlify.app/js-whitelist/module.js" crossorigin=""></script> got error
<script async="" type="module" src="https://cors-server.netlify.app/js-whitelist/module.js" crossorigin="anonymous"></script> got error
<script async="" src="https://cors-server.netlify.app/js/main.js" crossorigin="anonymous"></script> got error
https://cors-server.netlify.app/js-public/module.js is running
<script async="" type="module" src="https://cors-server.netlify.app/js-public/module.js"></script> got load
<script async="" type="module" src="https://cors-server.netlify.app/js-public/module.js" crossorigin="anonymous"></script> got load
https://cors-server.netlify.app/js-whitelist/main.js is running
<script async="" src="https://cors-server.netlify.app/js-whitelist/main.js"></script> got load
https://cors-server.netlify.app/js-public/main.js is running
<script async="" src="https://cors-server.netlify.app/js-public/main.js"></script> got load
https://cors-server.netlify.app/js/main.js is running
<script async="" src="https://cors-server.netlify.app/js/main.js"></script> got load
https://cors-server.netlify.app/js-whitelist/main.js is running
<script async="" src="https://cors-server.netlify.app/js-whitelist/main.js" crossorigin="anonymous"></script> got load
https://cors-server.netlify.app/js-public/main.js is running
<script async="" src="https://cors-server.netlify.app/js-public/main.js" crossorigin="anonymous"></script> got load