← Back to release summary

Fetch API: AbortSignal and AbortController

Category

Network / Connectivity

Type

New or changed feature

Status

Enabled by default (Chrome 66)

Intent stage

None

Summary

A fetch() can be made cancellable by passing an AbortSignal "signal" in the fetch options. Calling abort() on the associated AbortController will then cancel the fetch.

Standards & signals

• Specification: https://fetch.spec.whatwg.org/#ref-for-dom-request-signal
• Firefox: Shipped/Shipping
• Safari: In development
• Web developers: Strongly positive
• Tracking bug: https://bugs.chromium.org/p/chromium/issues/detail?id=750599

Docs: https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal https://developer.mozilla.org/en-US/docs/Web/API/AbortController

Samples: https://developers.google.com/web/updates/2017/09/abortable-fetch

View on chromestatus.com