{"json_modified": "2016-09-12T11:05:26.962181", "uuid": "d773a164-0689-45fa-8c96-138df4f9e163", "title": "WorkerNavigator.sendBeacon()", "url": "/en-US/docs/Web/API/WorkerNavigator/sendBeacon", "tags": ["API", "Beacon", "Web Performance", "Reference", "sendBeacon", "Experimental", "WorkerNavigator", "Networking", "Method"], "translations": [], "modified": "2016-09-12T11:05:27", "label": "WorkerNavigator.sendBeacon()", "localization_tags": [], "locale": "en-US", "id": 170895, "last_edit": "2016-09-12T11:05:20", "summary": "The <code><strong>NavigatorWorker.sendBeacon()</strong></code> method can be used to asynchronously transfer a small amount of data over <a class=\"glossaryLink\" href=\"/en-US/docs/Glossary/HTTP\" title=\"HTTP: HTTP (HyperText Transfer Protocol) is the basic protocol that enables file transfer on the Web. HTTP is textual (all communication is done in plain text) and stateless (no communication is aware of previous communications).\">HTTP</a> from a <a href=\"/en-US/docs/Web/API/Worker\" title=\"The Worker interface of the Web Workers API represents a background task that can be easily created and can send messages back to its creator. Creating a worker is as simple as calling the Worker()&#xA0;constructor and specifying a script to be run in the worker thread.\"><code>worker</code></a> to a web server. This is functionally equivalent to the <a href=\"/en-US/docs/Web/API/Navigator/sendBeacon\" title=\"The navigator.sendBeacon() method can be used to asynchronously transfer small HTTP data from the User Agent to a web server.\"><code>Navigator.sendBeacon()</code></a> method; see that article for additional details on what this method can be used for and why.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Parameters", "title": "Parameters"}, {"id": "Return_value", "title": "Return value"}, {"id": "Example", "title": "Example"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/API/WorkerNavigator/sendBeacon", "review_tags": ["technical"]}