ReadableStreamDefaultReader.closed

Draft
This page is not complete.

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

The closed getter property of the ReadableStream interface returns a promise that fulfills if the stream becomes closed or the reader's lock is released, or rejects if the stream errors.

Syntax

var closed = readableStreamDefaultReaderInstance.closed;

Value

A Promise.

Examples

In this snippet, a previously-created reader is queried to see if the stream has been closed. When it is closed, the promise fulfills and the message is logged to the console.

reader.closed.then(() => {
  console.log('reader closed');
})

Specifications

Specification Status Comment
Streams
The definition of 'closed' in that specification.
Living Standard Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
Experimental
Chrome ? Edge ? Firefox ? IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

Document Tags and Contributors

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