This feature is well established and works across many devices and browser versions. It’s been available across browsers since August 2016.
HTTP の Content-Security-Policy (CSP) における frame-src ディレクティブは、 や
| Specification |
|---|
| Content Security Policy Level 3 # directive-frame-src |
Content-Security-Policy\n"}},{"type":"specifications","value":{"id":"仕様書","title":"仕様書","isH3":false,"specifications":[{"bcdSpecificationURL":"https://w3c.github.io/webappsec-csp/#directive-frame-src","title":"Content Security Policy Level 3"}],"query":"http.headers.Content-Security-Policy.frame-src"}},{"type":"browser_compatibility","value":{"id":"ブラウザーの互換性","title":"ブラウザーの互換性","isH3":false,"query":"http.headers.Content-Security-Policy.frame-src"}},{"type":"prose","value":{"id":"関連情報","title":"関連情報","isH3":false,"content":"