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 Connection.bandwidth read-only property is a double representing the estimated download bandwidth (in megabytes per second) of the current connection.
Syntax
speed = connection.bandwidth
On return, speed is the estimated download bandwidth in megabytes per second. There are two special values: 0 is returned if the user is currently offline, and infinity is returned if the bandwidth is unknown.
Specifications
| Specification | Status | Comment |
|---|---|---|
| Network Information API The definition of 'Connection.bandwidth' in that specification. |
Editor's Draft | Initial specification. |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | Not supported | 12.0 moz | Not supported | Not supported | Not supported |
| Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | Not supported | 12.0 moz | Not supported | Not supported | Not supported |
Gecko notes
- The Network API can be disabled using the
dom.network.enabledpreference. - As of Gecko 12.0, the Network API is implemented for Android systems only. Support for Linux (bug 712442) and Windows (bug 721306) systems is in progress.