BASELINE NowYouCanUse.com
Widely Available Messaging
id: server-sent-events

Server-sent events

The EventSource API creates a connection to a server and listens to a stream of events sent by the server.
Baseline Status: Achieved Widely Available on Jul 15, 2022 (Cross-browser Newly Available since Jan 15, 2020).
Desktop Browser Engine Support
Google Chrome
6
Supported
Mozilla Firefox
6
Supported
Apple Safari
5
Supported
Microsoft Edge
79
Supported
Mobile Browser Engine Support
Chrome Android
18
Firefox Android
45
Safari iOS
5
Specifications and References
Specification ↗ Can I Use (eventsource) ↗ Feature XML ↗
MDN Browser Compat Data Keys:
api.EventSource ↗ api.EventSource.EventSource ↗ api.EventSource.EventSource.options_withCredentials_parameter ↗ api.EventSource.close ↗ api.EventSource.error_event ↗ api.EventSource.message_event ↗ api.EventSource.open_event ↗ api.EventSource.readyState ↗ api.EventSource.url ↗ api.EventSource.withCredentials ↗ api.EventSource.worker_support ↗