This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.
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
NetworkInformationinterfaces cannot be instantiated. It is instead accessed through theNavigatorinterface.
Specifications
| Specification | Status | Comment |
|---|---|---|
| Network Information API The definition of 'Network Information API' in that specification. |
Editor's Draft | Initial specification |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | Not supported | Not supported | Not supported | Not supported | Not supported |
| Feature | Android | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | 2.2 webkit | 12.0[1] | 1.4 | Not supported | Not supported | Not supported |
[1] The Network API can be disabled using the dom.netinfo.enabled preference.
