This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The NetworkInformation
interface provides information about the connection a device is using to communicate with the network and provides a means for scripts to be notified if the connection type changes. The NetworkInformation
interfaces cannot be instantiated. It is instead accessed through the connection
property of the Navigator
interface.
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Properties
This interface also inherits properties of its parent, EventTarget
.
-
NetworkInformation.downlink
Read only- Returns the effective bandwidth estimate in megabits per second, rounded to the nearest multiple of 25 kilobits per seconds.
NetworkInformation.downlinkMax
Read only- Returns the maximum downlink speed, in megabits per second (Mbps), for the underlying connection technology.
NetworkInformation.effectiveType
Read only- Returns the effective type of the connection meaning one of 'slow-2g', '2g', '3g', or '4g'. This value is determined using a combination of recently observed round-trip time and downlink values.
NetworkInformation.rtt
Read only- Returns the estimated effective round-trip time of the current connection, rounded to the nearest multiple of 25 milliseconds.
NetworkInformation.saveData
Read only- Returns
true
if the user has set a reduced data usage option on the user agent. NetworkInformation.type
Read only- Returns the type of connection a device is using to communicate with the network. It will be one of the following values:
bluetooth
cellular
ethernet
none
wifi
wimax
other
unknown
Event handlers
NetworkInformation.onchange
- The event that's fired when connection information changes and the
change
is fired on this object.
Methods
This interface also inherits methods of its parent, EventTarget
.
Specifications
Specification | Status | Comment |
---|---|---|
Network Information API The definition of 'NetworkInformation' in that specification. |
Draft | Initial definition |
Browser compatibility
BCD tables only load in the browser
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
See also
- Network Information API
- Online and offline events
- The
Navigator
interface that implements it.