CountQueuingStrategy.size()

Draft
This page is not complete.

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

The size() method of the CountQueuingStrategy interface always returns 1, so that the total queue size is a count of the number of chunks in the queue.

Syntax

var size = countQueuingStrategyInstance.size();

Parameters

None.

Return value

1.

Examples

const queuingStrategy = new CountQueuingStrategy({ highWaterMark: 1 });

const writableStream = new WritableStream({
  // Implement the sink
  write(chunk) {
    ...
  },
  close() {
    ...
  },
  abort(err) {
    console.log("Sink error:", err);
  }
}, queuingStrategy);

var size = queuingStrategy.size();

Specifications

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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support5916571 No46 ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support59591657146 ? ?

1. From version 57: this feature is behind the dom.streams.enabled preference (needs to be set to true) and the javascript.options.streams preference (needs to be set to true). To change preferences in Firefox, visit about:config.

Document Tags and Contributors

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