Network Information API

The Network Information API provides information about the system's connection, which is in term of general connection type (e.g., 'wifi', 'cellular', etc.). This can be used to select high definition content or low definition content based on the user's connection. The entire API consists of the addition of the NetworkInformation interface and a single property to the Navigator interface: Navigator.connection.

Detecting connection changes

This example watches for changes to the user's connection.

var connection = navigator.connection || navigator.mozConnection || navigator.webkitConnection;
var type = connection.type;

function updateConnectionStatus() {
  console.log("Connection type is change from " + type + " to " + connection.type);
}

connection.addEventListener('typechange', updateConnectionStatus);

Interfaces

NetworkInformation

Provides information about the connection a device is using to commuinicate 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 Navigator interface.

Specifications

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

Browser compatibility

[1] The Network API can be disabled using the dom.netinfo.enabled preference.

See also

• Network Information API SpecificationED
• Online and offline events
• window.navigator.connection