This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The BlobEvent() constructor returns a newly created BlobEvent object with an associated Blob.


blobEvent = new BlobEvent({data: aSpecificBlob}[, timecode]);


The BlobEvent() constructor also inherits arguments from Event().

Is a Blob associated with the event.
timecode Optional
A DOMHighResTimeStamp to be used in initializing the blob event.


Specification Status Comment
MediaStream Recording
The definition of 'BlobEvent: BlobEvent' in that specification.
Working Draft Initial definition.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
BlobEvent() constructor
Chrome Full support 49Edge Full support ≤79Firefox Full support 22IE No support NoOpera Full support 36Safari No support NoWebView Android Full support 49Chrome Android Full support 49Firefox Android Full support 22Opera Android Full support 36Safari iOS No support NoSamsung Internet Android Full support 5.0


Full support  
Full support
No support  
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

See also