Limited availability
Note: This feature is available in Web Workers.
The NetworkInformation interface of the Network Information API 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 interface cannot be instantiated. It is instead accessed through the connection property of the Navigator interface or the WorkerNavigator interface.
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 Experimental
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 Experimental
Returns the type of connection a device is using to communicate with the network. It will be one of the following values:
bluetoothcellularethernetnonewifiwimaxotherunknownThis interface also inherits methods of its parent, EventTarget.
change
The event that's fired when connection information changes.
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