This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The id read-only property of the Client interface returns the universally unique identifier of the Client object.

Syntax

var clientId = Client.id;

Example

TBD

Specifications

Specification Status Comment
Service Workers
The definition of 'id' in that specification.
Editor's Draft Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 45.0[1] 44.0 (44.0)[2] No support ? No support
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support No support 44.0 (44.0) ? No support ? No support 45.0 [1]

Document Tags and Contributors

 Contributors to this page: chrisdavidmills, jpmedley, fscholz, kscarfone
 Last updated by: chrisdavidmills,