Sep 3, 2026 · Developing a web application that uses server - sent events is straightforward. You'll need a bit of code on the server to stream events to the front-end, but the client-side code works almost identically to websockets in part of handling incoming events.
Mar 13, 2025 · The EventSource interface is web content's interface to server - sent events . An EventSource instance opens a persistent connection to an HTTP server , which sends events in text/ event -stream format.
Apr 8, 2017 · The server - sent event API is contained in the EventSource interface; to open a connection to the server to begin receiving events from it, create a new EventSource object specifying the URI of a script that generates the events.
2 days ago · To enable servers to push data to web pages over HTTP or using dedicated server-push protocols, this specification introduces the EventSource interface. Using this API consists of creating an EventSource object and registering an event listener. alert(event.data);
Code examples that accompany various MDN DOM and Web API documentation pages - dom-examples/ server - sent - events /index.html at main · mdn/dom-examples