{
"api": {
"WindowEventHandlers": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/API/WindowEventHandlers",
"support": {
"chrome": {
"version_added": true
},
"chrome_android": {
"version_added": true
},
"edge": {
"version_added": null
},
"edge_mobile": {
"version_added": null
},
"firefox": {
"version_added": true
},
"firefox_android": {
"version_added": true
},
"ie": {
"version_added": null
},
"opera": {
"version_added": true
},
"opera_android": {
"version_added": true
},
"safari": {
"version_added": null
},
"safari_ios": {
"version_added": null
},
"webview_android": {
"version_added": true
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"onafterprint": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/API/WindowEventHandlers/onafterprint",
"support": {
"chrome": {
"version_added": "63"
},
"chrome_android": {
"version_added": "63"
},
"edge": {
"version_added": true
},
"edge_mobile": {
"version_added": true
},
"firefox": {
"version_added": "6"
},
"firefox_android": {
"version_added": null
},
"ie": {
"version_added": true
},
"opera": {
"version_added": "50"
},
"opera_android": {
"version_added": "50"
},
"safari": {
"version_added": false
},
"safari_ios": {
"version_added": null
},
"webview_android": {
"version_added": "63"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"onbeforeprint": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/API/WindowEventHandlers/onbeforeprint",
"support": {
"chrome": {
"version_added": "63"
},
"chrome_android": {
"version_added": "63"
},
"edge": {
"version_added": true
},
"edge_mobile": {
"version_added": true
},
"firefox": {
"version_added": "6"
},
"firefox_android": {
"version_added": null
},
"ie": {
"version_added": true
},
"opera": {
"version_added": "50"
},
"opera_android": {
"version_added": "50"
},
"safari": {
"version_added": false
},
"safari_ios": {
"version_added": null
},
"webview_android": {
"version_added": "63"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"onbeforeunload": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/API/WindowEventHandlers/onbeforeunload",
"support": {
"chrome": {
"version_added": "1"
},
"chrome_android": {
"version_added": true
},
"edge": {
"version_added": true
},
"edge_mobile": {
"version_added": true
},
"firefox": {
"version_added": "1"
},
"firefox_android": {
"version_added": null
},
"ie": {
"version_added": "4"
},
"opera": {
"version_added": "12"
},
"opera_android": {
"version_added": true
},
"safari": {
"version_added": "3"
},
"safari_ios": {
"version_added": false,
"notes": "Implementation seems defect."
},
"webview_android": {
"version_added": true
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"custom_text_support": {
"__compat": {
"description": "Custom text support",
"support": {
"chrome": {
"version_added": true,
"version_removed": "51"
},
"chrome_android": {
"version_added": true,
"version_removed": "51"
},
"edge": {
"version_added": false
},
"edge_mobile": {
"version_added": false
},
"firefox": {
"version_added": true,
"version_removed": "44"
},
"firefox_android": {
"version_added": true,
"version_removed": "44"
},
"ie": {
"version_added": true
},
"opera": {
"version_added": true,
"version_removed": "38"
},
"opera_android": {
"version_added": true,
"version_removed": "38"
},
"safari": {
"version_added": true,
"version_removed": "9"
},
"safari_ios": {
"version_added": null
},
"webview_android": {
"version_added": true,
"version_removed": "51"
}
},
"status": {
"experimental": false,
"standard_track": false,
"deprecated": true
}
}
}
},
"onhashchange": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/API/WindowEventHandlers/onhashchange",
"support": {
"chrome": {
"version_added": "5"
},
"chrome_android": {
"version_added": true
},
"edge": {
"version_added": true
},
"edge_mobile": {
"version_added": true
},
"firefox": {
"version_added": "3.6"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "8"
},
"opera": {
"version_added": "10"
},
"opera_android": {
"version_added": "11"
},
"safari": {
"version_added": "5"
},
"safari_ios": {
"version_added": "5"
},
"webview_android": {
"version_added": true
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"onlanguagechange": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/API/WindowEventHandlers/onlanguagechange",
"support": {
"chrome": {
"version_added": "37"
},
"chrome_android": {
"version_added": "37"
},
"edge": {
"version_added": null
},
"edge_mobile": {
"version_added": null
},
"firefox": {
"version_added": "32"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": false
},
"opera": {
"version_added": "24"
},
"opera_android": {
"version_added": "24"
},
"safari": {
"version_added": null
},
"safari_ios": {
"version_added": null
},
"webview_android": {
"version_added": "37"
}
},
"status": {
"experimental": true,
"standard_track": true,
"deprecated": false
}
}
},
"onmessage": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/API/WindowEventHandlers/onmessage",
"support": {
"chrome": {
"version_added": "60"
},
"chrome_android": {
"version_added": "60"
},
"edge": {
"version_added": null
},
"edge_mobile": {
"version_added": null
},
"firefox": {
"version_added": null
},
"firefox_android": {
"version_added": null
},
"ie": {
"version_added": null
},
"opera": {
"version_added": "47"
},
"opera_android": {
"version_added": "47"
},
"safari": {
"version_added": null
},
"safari_ios": {
"version_added": null
},
"webview_android": {
"version_added": "60"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"onmessageerror": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/API/WindowEventHandlers/onmessageerror",
"support": {
"chrome": {
"version_added": "60"
},
"chrome_android": {
"version_added": "60"
},
"edge": {
"version_added": null
},
"edge_mobile": {
"version_added": null
},
"firefox": {
"version_added": "57"
},
"firefox_android": {
"version_added": "57"
},
"ie": {
"version_added": null
},
"opera": {
"version_added": "47"
},
"opera_android": {
"version_added": "47"
},
"safari": {
"version_added": null
},
"safari_ios": {
"version_added": null
},
"webview_android": {
"version_added": "60"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
},
"worker_support": {
"__compat": {
"description": "Available in workers",
"support": {
"chrome": {
"version_added": "60"
},
"chrome_android": {
"version_added": "60"
},
"edge": {
"version_added": null
},
"edge_mobile": {
"version_added": null
},
"firefox": {
"version_added": "57"
},
"firefox_android": {
"version_added": "57"
},
"ie": {
"version_added": null
},
"opera": {
"version_added": "47"
},
"opera_android": {
"version_added": "47"
},
"safari": {
"version_added": null
},
"safari_ios": {
"version_added": null
},
"webview_android": {
"version_added": "60"
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
}
},
"onpopstate": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/API/WindowEventHandlers/onpopstate",
"support": {
"chrome": {
"version_added": "5"
},
"chrome_android": {
"version_added": "18"
},
"edge": {
"version_added": "12"
},
"edge_mobile": {
"version_added": null
},
"firefox": {
"version_added": "4"
},
"firefox_android": {
"version_added": "4"
},
"ie": {
"version_added": "10"
},
"opera": {
"version_added": "11.5"
},
"opera_android": {
"version_added": "12"
},
"safari": {
"version_added": "6"
},
"safari_ios": {
"version_added": "5.1"
},
"webview_android": {
"version_added": null
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"onrejectionhandled": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/API/WindowEventHandlers/onrejectionhandled",
"support": {
"chrome": {
"version_added": "49"
},
"chrome_android": {
"version_added": false
},
"edge": {
"version_added": null
},
"edge_mobile": {
"version_added": null
},
"firefox": {
"version_added": false,
"notes": "Firefox implements the PromiseRejectionEvent
interface if you go to about:config and set the dom.promise_rejection_events.enabled
pref to true
. However, Firefox doesn't yet actually send the unhandledrejection
or understand rejectionhandled
events. Completing the implementation will be addressed in bug 1362272."
},
"firefox_android": {
"version_added": false,
"notes": "Firefox implements the PromiseRejectionEvent
interface if you go to about:config and set the dom.promise_rejection_events.enabled
pref to true
. However, Firefox doesn't yet actually send the unhandledrejection
or understand rejectionhandled
events. Completing the implementation will be addressed in bug 1362272."
},
"ie": {
"version_added": false
},
"opera": {
"version_added": false
},
"opera_android": {
"version_added": false
},
"safari": {
"version_added": false
},
"safari_ios": {
"version_added": false
},
"webview_android": {
"version_added": false
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"onstorage": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/API/WindowEventHandlers/onstorage",
"support": {
"chrome": {
"version_added": null
},
"chrome_android": {
"version_added": false
},
"edge": {
"version_added": true
},
"edge_mobile": {
"version_added": true
},
"firefox": {
"version_added": "45"
},
"firefox_android": {
"version_added": "45"
},
"ie": {
"version_added": null
},
"opera": {
"version_added": null
},
"opera_android": {
"version_added": null
},
"safari": {
"version_added": null
},
"safari_ios": {
"version_added": null
},
"webview_android": {
"version_added": false
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"onunhandledrejection": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/API/WindowEventHandlers/onunhandledrejection",
"support": {
"chrome": {
"version_added": "49"
},
"chrome_android": {
"version_added": false
},
"edge": {
"version_added": true
},
"edge_mobile": {
"version_added": true
},
"firefox": {
"version_added": false,
"notes": "Firefox implements the PromiseRejectionEvent
interface if you go to about:config and set the dom.promise_rejection_events.enabled
pref to true
. However, Firefox doesn't yet actually send the unhandledrejection
or understand rejectionhandled
events. Completing the implementation will be addressed in bug 1362272."
},
"firefox_android": {
"version_added": false,
"notes": "Firefox implements the PromiseRejectionEvent
interface if you go to about:config and set the dom.promise_rejection_events.enabled
pref to true
. However, Firefox doesn't yet actually send the unhandledrejection
or understand rejectionhandled
events. Completing the implementation will be addressed in bug 1362272."
},
"ie": {
"version_added": false
},
"opera": {
"version_added": false
},
"opera_android": {
"version_added": false
},
"safari": {
"version_added": false
},
"safari_ios": {
"version_added": false
},
"webview_android": {
"version_added": false
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
},
"onunload": {
"__compat": {
"mdn_url": "https://developer.mozilla.org/docs/Web/API/WindowEventHandlers/onunload",
"support": {
"chrome": {
"version_added": true
},
"chrome_android": {
"version_added": true
},
"edge": {
"version_added": true
},
"edge_mobile": {
"version_added": true
},
"firefox": {
"version_added": true
},
"firefox_android": {
"version_added": true
},
"ie": {
"version_added": true
},
"opera": {
"version_added": true
},
"opera_android": {
"version_added": true
},
"safari": {
"version_added": true
},
"safari_ios": {
"version_added": true
},
"webview_android": {
"version_added": true
}
},
"status": {
"experimental": false,
"standard_track": true,
"deprecated": false
}
}
}
}
}
}