| { |
| "css": { |
| "selectors": { |
| "defined": { |
| "__compat": { |
| "description": "`:defined`", |
| "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:defined", |
| "spec_url": [ |
| "https://html.spec.whatwg.org/multipage/semantics-other.html#selector-defined", |
| "https://drafts.csswg.org/selectors/#defined-pseudo" |
| ], |
| "tags": [ |
| "web-features:autonomous-custom-elements" |
| ], |
| "support": { |
| "chrome": { |
| "version_added": "54" |
| }, |
| "chrome_android": "mirror", |
| "edge": "mirror", |
| "firefox": { |
| "version_added": "63" |
| }, |
| "firefox_android": "mirror", |
| "ie": { |
| "version_added": false |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "10" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| } |
| } |
| } |
| } |
