BackgroundFetchRegistration: failureReason property
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The failureReason
read-only property of the BackgroundFetchRegistration
interface returns a string with a value that indicates a reason for a background fetch failure.
If the value of this property changes, the progress event is fired at the associated BackgroundFetchRegistration
object.
Value
One of the following strings:
""
-
The background fetch has not completed, or was successful.
"aborted"
-
The operation was cancelled by the user, or
abort()
was called. "bad-status"
-
A response had a not-ok status (a status outside the range 200-299).
"fetch-error"
-
A fetch failed for other reasons, for example CORS, or a network failure.
"quota-exceeded"
-
Storage quota was reached during the operation.
"download-total-exceeded"
-
The provided
downloadTotal
was exceeded. This value was set when the background fetch was registered.
Examples
Logging this property to the console prints the reason the fetch failed, or an empty string if it was successful or has not yet completed.
js
console.log(bgFetch.failureReason);
Specifications
Specification |
---|
Background Fetch # dom-backgroundfetchregistration-failurereason |
Browser compatibility
BCD tables only load in the browser