FetchEvent.clientId attribute

A read-only attribute that indicates the id of the Client object that initiated this fetch request. For a navigation request and worker (dedicated worker and shared worker) script fetch, this attribute returns null.



Working draft or equivalent

Status in Chromium


Enabled by default (launch bug) in:

  • Chrome for desktop release 49
  • Chrome for Android release 49
  • Opera release 36
  • Opera for Android release 36

Consensus & Standardization

  • Shipped
  • No public signals
  • No public signals
  • No signals


Last updated on 2017-06-14