{"action":"created","issue":{"url":"https://api.github.com/repos/validator/validator/issues/138","labels_url":"https://api.github.com/repos/validator/validator/issues/138/labels{/name}","comments_url":"https://api.github.com/repos/validator/validator/issues/138/comments","events_url":"https://api.github.com/repos/validator/validator/issues/138/events","html_url":"https://github.com/validator/validator/issues/138","id":97490284,"number":138,"title":"Missing iframe sandbox allow-popups token","user":{"login":"FedgeNo","id":8592371,"avatar_url":"https://avatars.githubusercontent.com/u/8592371?v=3","gravatar_id":"","url":"https://api.github.com/users/FedgeNo","html_url":"https://github.com/FedgeNo","followers_url":"https://api.github.com/users/FedgeNo/followers","following_url":"https://api.github.com/users/FedgeNo/following{/other_user}","gists_url":"https://api.github.com/users/FedgeNo/gists{/gist_id}","starred_url":"https://api.github.com/users/FedgeNo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/FedgeNo/subscriptions","organizations_url":"https://api.github.com/users/FedgeNo/orgs","repos_url":"https://api.github.com/users/FedgeNo/repos","events_url":"https://api.github.com/users/FedgeNo/events{/privacy}","received_events_url":"https://api.github.com/users/FedgeNo/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/validator/validator/labels/known%20issue","name":"known issue","color":"eb6420"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":6,"created_at":"2015-07-27T15:31:05Z","updated_at":"2015-07-27T18:09:34Z","closed_at":null,"body":"Error: Bad value allow-popups for attribute sandbox on element iframe.\r\n\r\nSpec: The sandbox attribute, when specified, enables a set of extra restrictions on any content hosted by the iframe. Its value must be an unordered set of unique space-separated tokens that are ASCII case-insensitive. The allowed values are allow-forms, allow-popups, allow-same-origin, allow-scripts, and allow-top-navigation."},"comment":{"url":"https://api.github.com/repos/validator/validator/issues/comments/125291354","html_url":"https://github.com/validator/validator/issues/138#issuecomment-125291354","issue_url":"https://api.github.com/repos/validator/validator/issues/138","id":125291354,"user":{"login":"sideshowbarker","id":194984,"avatar_url":"https://avatars.githubusercontent.com/u/194984?v=3","gravatar_id":"","url":"https://api.github.com/users/sideshowbarker","html_url":"https://github.com/sideshowbarker","followers_url":"https://api.github.com/users/sideshowbarker/followers","following_url":"https://api.github.com/users/sideshowbarker/following{/other_user}","gists_url":"https://api.github.com/users/sideshowbarker/gists{/gist_id}","starred_url":"https://api.github.com/users/sideshowbarker/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sideshowbarker/subscriptions","organizations_url":"https://api.github.com/users/sideshowbarker/orgs","repos_url":"https://api.github.com/users/sideshowbarker/repos","events_url":"https://api.github.com/users/sideshowbarker/events{/privacy}","received_events_url":"https://api.github.com/users/sideshowbarker/received_events","type":"User","site_admin":false},"created_at":"2015-07-27T18:09:34Z","updated_at":"2015-07-27T18:09:34Z","body":"> My bad. I just googled it and HTML5 is no longer based on SGML. Sorry for the notifications.\r\n\r\nNo worries. You're actually right in that there are a number of so-called \"boolean\" attributes in the spec where the syntax is essentially what you describe; e.g., `<input type=checkbox checked=checked>`; see https://html.spec.whatwg.org/multipage/infrastructure.html#boolean-attribute. (But the `sandbox` attribute just isn't one of those \"boolean\" attributes.)\r\n"}}