Refused to display 'url' in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'

Source: https://stackoverflow.com/questions/41522652/refused-to-display-url-in-a-frame-because-it-set-x-frame-options-to-sameori

I faced the same error when displaying YouTube links. For example: https://www.youtube.com/watch?v=8WkuChVeL0s

I replaced watch?v= with embed/ so the valid link will be: https://www.youtube.com/embed/8WkuChVeL0s

It works well.

Try to apply the same rule on your case.

What is the default value of Access-Control-Allow-Origin header?

Source: https://stackoverflow.com/questions/54771129/what-is-the-default-value-of-access-control-allow-origin-header

There is no default value.

If it isn't set, then it isn't set. If it is set, then it must have an explicit value.

If the header is not set, does it mean that every origin has access to the resource?

No. It means that the Same Origin Policy is enforced as normal. No origins are granted permission.

the server's URI

There is no reason to ever set the Access-Control-Allow-Origin to be the server's own URL. Same Origin requests don't need permission from CORS.

Enable Access-Control-Allow-Origin for multiple domains in nodejs

Source: https://stackoverflow.com/questions/24897801/enable-access-control-allow-origin-for-multiple-domains-in-nodejs

app.use(function(req, res, next) {
  var allowedOrigins = ['http://127.0.0.1:8020', 'http://localhost:8020', 'http://127.0.0.1:9000', 'http://localhost:9000'];
  var origin = req.headers.origin;
  if(allowedOrigins.indexOf(origin) > -1){
       res.setHeader('Access-Control-Allow-Origin', origin);
  }
  //res.header('Access-Control-Allow-Origin', 'http://127.0.0.1:8020');
  res.header('Access-Control-Allow-Methods', 'GET, OPTIONS');
  res.header('Access-Control-Allow-Headers', 'Content-Type, Authorization');
  res.header('Access-Control-Allow-Credentials', true);
  return next();
});

For multiple domains, in your .htaccess:

<IfModule mod_headers.c>
    SetEnvIf Origin "http(s)?://(www\.)?(domain1.example|domain2.example)$" AccessControlAllowOrigin=$0
    Header add Access-Control-Allow-Origin %{AccessControlAllowOrigin}e env=AccessControlAllowOrigin
    Header set Access-Control-Allow-Credentials true 

</IfModule>

stringify in an expression in Angular2 template

Source: https://stackoverflow.com/questions/38622470/using-json-stringify-in-an-expression-in-angular2-template

<pre>{{object | json}}</pre>

Prevent SweetAlert to be closed on clicking outside the popup window

Source: https://stackoverflow.com/questions/47749095/prevent-sweetalert-to-be-closed-on-clicking-outside-the-popup-window

If you are using Sweet Alert 2, you can use this configuration

allowOutsideClick: false

This should work.