This feature is not Baseline because it does not work in some of the most widely-used browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Note: This feature is available in Web Workers.
The uploadTotal read-only property of the BackgroundFetchRegistration interface returns the total number of bytes to be sent to the server.
A number.
Logging this property to the console returns the total number of this upload.
console.log(bgFetch.uploadTotal);
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
uploadTotal |
74 | 79 | No | 62 | No | 74 | No | 53 | No | 11.0 | No | No |
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https://developer.mozilla.org/en-US/docs/Web/API/BackgroundFetchRegistration/uploadTotal