BackgroundFetchRegistration: downloaded property

Limited availabilityAvailable in workers

The downloaded read-only property of the BackgroundFetchRegistration interface returns the size in bytes that has been downloaded, initially 0.

If the value of this property changes, the progress event is fired at the associated BackgroundFetchRegistration object.

Value

A Number.

Examples

Logging this property to the console returns the number of bytes downloaded.

console.log(bgFetch.downloaded);

Specifications

Browser compatibility