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NetworkInformation.downlink

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

The downlink read-only property of the NetworkInformation interface returns the effective bandwidth estimate in megabits per second, rounded to the nearest multiple of 25 kilobits per seconds. This value is based on recently observed application layer throughput across recently active connections, excluding connections made to a private address space. In the absence of recent bandwidth measurement data, the attribute value is determined by the properties of the underlying connection technology.

Syntax

var downLink = NetworkInformation.downlink

Value

A double.

Specifications

Specification Status Comment
Network Information API
The definition of 'downlink' in that specification.
Editor's Draft Initial definition.

Browser Compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 61 ? ? 48 ?
Available in workers 61 ? ? 48 ?
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
Basic support 50 38 ? ? ? 37 ?
Available in workers 50 38 ? ? ? 37 ?

Document Tags and Contributors

Contributors to this page: jpmedley
Last updated by: jpmedley,