Server-sent events - Web APIs 编辑

Traditionally, a web page has to send a request to the server to receive new data; that is, the page requests data from the server. With server-sent events, it's possible for a server to send new data to a web page at any time, by pushing messages to the web page. These incoming messages can be treated as Events + data inside the web page.

Note:

Firefox does not currently support the use of server-sent events in service workers (it does support them dedicated and shared workers). See bug 1681218.

Concepts and usage

To learn how to use server-sent events, see our article Using server-sent events.

Interfaces

EventSource

Defines all the features that handle connecting to a server, receiving events/data, errors, closing a connection, etc.

Examples

• Simple SSE demo using PHP

Specifications

See also

Tools

• EventSource polyfill for Node.js
• Remy Sharp’s EventSource polyfill
• Yaffle’s EventSource polyfill
• Rick Waldron’s jquery plugin
• intercooler.js declarative SSE support

Related Topics

• AJAX
• JavaScript
• WebSockets

Other resources

• A Twitter like application powered by server-sent events and its code on Github.
• HTML5 and Server-sent events
• Server-sent events using Asp.Net