NetworkInformation

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.

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.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

Browser compatibility

[1] Excludes downlinkMax and type properties.

See also

• Network Information API
• Online and offline events
• The Navigator interface that implements it.