Web APIsLesson 60Free preview

Server-Sent Events API

This lesson is part of HTML · All levels

Summary

Server-Sent Events (SSE) allows servers to send data continuously to web pages via a single HTTP connection path. On the client side, the EventSource object is used to open the connection and handle incoming messages. This feature is suitable for live updates such as notifications, stock prices, or match scores.

Key points

SSE sends updates from the server to the browser in one direction
The client uses new EventSource("url") to listen to messages
Event onmessage captures the data sent by the server
Suitable for live updates such as notifications and live scores

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