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.
Navigator.connection read-only property represents a
NetworkInformation containing information about the system's connection, such as the current bandwidth of the user's device or whether the connection is metered. This could be used to select high definition content or low definition content based on the user's connection.
connectionInfo = navigator.connection
|Network Information API
The definition of 'Navigator.connection' in that specification.
|Editor's Draft||Initial specification|
|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||1.4||Not supported||Not supported||Not supported|
 The Network API can be disabled using the