Client

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨April 2018⁩.

Note: This feature is only available in Service Workers.

The Client interface represents an executable context such as a Worker, or a SharedWorker. Window clients are represented by the more-specific WindowClient. You can get Client/WindowClient objects from methods such as Clients.matchAll() and Clients.get().

Instance methods

Client.frameType Read only: The client's frame type as a string. It can be "auxiliary", "top-level", "nested", or "none".
Client.id Read only: The universally unique identifier of the client as a string.
Client.type Read only: The client's type as a string. It can be "window", "worker", or "sharedworker".
Client.url Read only: The URL of the client as a string.