ExtendableEvent

The ExtendableEvent interface extends the lifetime of the install and activate events dispatched on the global scope as part of the service worker lifecycle. This ensures that any functional events (like FetchEvent) are not dispatched until it upgrades database schemas and deletes the outdated cache entries.

Read More at MDN DocsView Spec

Safe to Use

ExtendableEvent is considered safe to use.

It’s supported by 93% of global browsers.

Browsers

ChromeJan 21, 2015v40.0.0
26%╱100%
There are no users of Chrome running a supported version.
SafariApr 12, 2018v11.1.0
5%╱96%
There are no users of Safari running a supported version.
EdgeApr 30, 2018v17.0.0
5%╱100%
100% of Edge users are running a supported version.
FirefoxJan 26, 2016v44.0.0
3%╱100%
100% of Firefox users are running a supported version.

Version Breakdown

 
Agent
Support
Adoption
Chrome
Jan 21, 2015 v40.0.0
26%╱100%
There are no users of Chrome running a supported version.
Jan 21, 2015 – Latest
v40.0.0+
26%╱100%

Full Support

Chrome Android
Jan 21, 2015 v40.0.0
36%╱100%
100% of Chrome Android users are running a supported version.
Jan 21, 2015 – Latest
v40.0.0+
36%╱100%

Full Support

Edge
Apr 30, 2018 v17.0.0
5%╱100%
100% of Edge users are running a supported version.
Apr 30, 2018 – Latest
v17.0.0+
5%╱100%

Full Support

Firefox
Jan 26, 2016 v44.0.0
3%╱100%
100% of Firefox users are running a supported version.
Jan 26, 2016 – Latest
v44.0.0+
3%╱100%

Full Support

Firefox for Android
Jan 26, 2016 v44.0.0
Firefox for Android supports this feature.
Jan 26, 2016 – Latest
v44.0.0+

Full Support

Internet Explorer
Unsupported
Internet Explorer does not support this feature.

No Support

 
Quest Browser
Unknown v5.0.0
Quest Browser supports this feature.
Unknown
v5.0.0+

Full Support

Opera
Sep 2, 2014 v24.0.0
1%╱100%
100% of Opera users are running a supported version.
Sep 2, 2014 – Latest
v24.0.0+
1%╱100%

Full Support

Opera Android
Sep 10, 2014 v24.0.0
Opera Android supports this feature.
Sep 10, 2014 – Latest
v24.0.0+

Full Support

Safari
Apr 12, 2018 v11.1.0
5%╱96%
There are no users of Safari running a supported version.
Apr 12, 2018 – Latest
v11.1.0+
5%╱96%

Full Support

Safari on iOS
Mar 29, 2018 v11.3.0
16%╱99%
There are no users of Safari on iOS running a supported version.
Mar 29, 2018 – Latest
v11.3.0+
16%╱99%

Full Support

Samsung Internet
Mar 11, 2016 v4.0.0
2%╱96%
There are no users of Samsung Internet running a supported version.
Mar 11, 2016 – Latest
v4.0.0+
2%╱96%

Full Support

WebView Android
Jan 21, 2015 v40.0.0
WebView Android supports this feature.
Jan 21, 2015 – Latest
v40.0.0+

Full Support

See Also

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