CORS prevents fetching data through JavaScript

[rowdyrabouw]

When you try to retrieve data with JavaScript like in the example below, this will not work because of CORS.

Access to fetch at 'https://api.joind.in/v2.1/talk_comments/44197?format=json' from origin 'http://localhost:8081' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. 

Please alter the response header for these GET requests.

<script>
  fetch('https://api.joind.in/v2.1/talk_comments/44197?format=json')
  .then((response) => {
    console.log(response);
    return response.json();
  })
  .then((json) => {
    console.log(json);
  });
</script>