{ "api": { "NavigatorOnLine": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigatorOnLine", "support": { "chrome": { "version_added": "1" }, "chrome_android": { "version_added": "18" }, "edge": { "version_added": "12" }, "firefox": { "version_added": "3.5" }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "8" }, "opera": { "version_added": "3" }, "opera_android": { "version_added": "10.1" }, "safari": { "version_added": "5" }, "safari_ios": { "version_added": "4.2" }, "samsunginternet_android": { "version_added": "1.0" }, "webview_android": { "version_added": "1" } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } }, "onLine": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigatorOnLine/onLine", "support": { "chrome": { "version_added": "1", "notes": "Earlier versions of Chrome incorrectly return true when a tab is first opened, but it starts reporting the correct connectivity status after the first network event. Windows: 11, Mac: 14, Chrome OS: 13, Linux: Always returns true. For history, see crbug.com/7469." }, "chrome_android": { "version_added": "18" }, "edge": { "version_added": "12" }, "firefox": { "version_added": "3.5", "notes": "Since Firefox 4 the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity. Since Firefox 41, on OS X and Windows, the returned values follow the actual network connectivity, unless 'Work offline' mode is selected (where it will always return false)." }, "firefox_android": { "version_added": "4" }, "ie": { "version_added": "8", "notes": "in Internet Explorer 8 'online' and 'offline' events are raised on the document.body; under IE 9 they are raised on both document.body and window." }, "opera": { "version_added": "3", "notes": "From Opera 11.1 until Opera 12.1, the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity." }, "opera_android": { "version_added": "10.1", "notes": "From Opera 11.1 until Opera 12.1, the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity." }, "safari": { "version_added": "5" }, "safari_ios": { "version_added": "4.2" }, "samsunginternet_android": { "version_added": "1.0" }, "webview_android": { "version_added": "1", "notes": "Faulty in a WebView component, see Issue bug 16760." } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } }, "worker_support": { "__compat": { "description": "Available in workers", "support": { "chrome": { "version_added": null }, "chrome_android": { "version_added": "29" }, "edge": { "version_added": null }, "firefox": { "version_added": "29" }, "firefox_android": { "version_added": "35" }, "ie": { "version_added": null }, "opera": { "version_added": null }, "opera_android": { "version_added": null }, "safari": { "version_added": null }, "safari_ios": { "version_added": null }, "samsunginternet_android": { "version_added": "2.0" }, "webview_android": { "version_added": null } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } } } } }