Web/API/ReadableStreamBYOBReader/cancel

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


The cancel() method of the ReadableStreamBYOBReader interface cancels the stream, signaling a loss of interest in the stream by a consumer. The supplied reason parameter will be given to the underlying source, which may or may not use it.

Note: If the reader is active, the cancel() method behaves the same as that for the associated stream (ReadableStream.cancel()).


Syntax

var promise = readableStreamBYOBReader.cancel(reason);

Parameters

reason
A DOMString providing a human-readable reason for the cancellation.

Return value

A Promise, which fulfills with the value given in the reason parameter.

Exceptions

TypeError
The source object is not a ReadableStreamBYOBReader, or the stream has no owner.

Examples

TBD.

Specifications

Specification Status Comment
StreamsThe definition of 'cancel()' in that specification. Living Standard Initial definition.

Browser compatibility

Update compatibility data on GitHub

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet

cancel

Experimental'

Chrome

No support No

Edge

No support No

Firefox

No support No

IE

No support No

Opera

No support No

Safari

No support No

WebView Android

No support No

Chrome Android

No support No

Firefox Android

No support No

Opera Android

No support No

Safari iOS

No support No

Samsung Internet Android

No support No

Legend

No support  
No support
Experimental. Expect behavior to change in the future.'
Experimental. Expect behavior to change in the future.