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.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 61 | ? | ? | ? | 48 | ? |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | 50 | 38 | ? | ? | 37 | ? | ? |