This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The effectiveType read-only property of the NetworkInformation interface returns the effective type of the connection meaning one of 'slow-2g', '2g', '3g', or '4g'. This value is determined using a combination of recently observed, round-trip time and downlink values.
Syntax
var effectiveType = NetworkInformation.effectiveType
Value
A String containing one of 'slow-2g', '2g', '3g', or '4g'.
Specifications
| Specification | Status | Comment |
|---|---|---|
| Network Information API The definition of 'effectiveType' in that specification. |
Draft | Initial definition. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
effectiveType | Chrome Full support 61 | Edge No support No | Firefox No support No | IE No support No | Opera Full support 48 | Safari No support No | WebView Android Full support 50 | Chrome Android Full support 38 | Firefox Android Full support Yes | Opera Android Full support 45 | Safari iOS No support No | Samsung Internet Android ? |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.