NetworkInformation.downlinkMax
This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage 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 specification changes.
The NetworkInformation.downlinkMax
read-only property returns the maximum downlink speed, in megabits per second (Mbps), for the underlying connection technology.
Syntax
var max = NetworkInformation.downlinkMax
Return value
- an
unrestricted double
representing the maximum downlink speed, in megabits per second (Mb/s), for the underlying connection technology.
Examples
The following example monitors the connection using the change
event and logs changes as they occur.
function logConnectionType() { var connectionType = 'not supported'; var downlinkMax = 'not supported'; if ('connection' in navigator) { connectionType = navigator.connection.type; if ('downlinkMax' in navigator.connection) { downlinkMax = navigator.connection.downlinkMax; } } console.log('Current connection type: ' + connectionType + ' (downlink max: ' + downlinkMax + ')'); } logConnectionType(); navigator.connection.addEventListener('change', logConnectionType);
Specifications
Specification | Status | Comment |
---|---|---|
Network Information API The definition of 'downlinkMax' in that specification. |
Editor's Draft | Initial definition |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 48.0 | Not supported | Not supported | Not supported | Not supported |
Feature | Android | Android Webview | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|
Basic support | (Yes) | Not supported | Not supported | Not supported | Not supported | Not supported | 48.0 |
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/networkinformation/downlinkmax