Deprecated
This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
The MediaRecorder.onwarning
event handler (part of the MediaRecorder API) handles the recordingwarning
event, allowing you to run code in response to non-fatal errors being thrown during media recording via a MediaRecorder
, which don't halt recording.
Syntax
mediaRecorder.onwarning = function(event) { ... } mediaRecorder.addEventListener('warning', function(event) { ... })
Example
... mediaRecorder.onwarning = function(e) { console.log("A warning has been raised: " + e.message); } ...
Properties
message
- Contains information about the error that occurred.
Browser compatibility
The compatibility table in 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.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
onwarning | Chrome Full support 49 | Edge Full support 79 | Firefox No support 25 — 71 | IE No support No | Opera Full support 36 | Safari No support No | WebView Android Full support 49 | Chrome Android Full support 49 | Firefox Android Full support 25 | Opera Android Full support 36 | Safari iOS No support No | Samsung Internet Android Full support 5.0 |
Legend
- Full support
- Full support
- No support
- No support
- Deprecated. Not for use in new websites.
- Deprecated. Not for use in new websites.
See also
- Using the MediaRecorder API
- Web Dictaphone: MediaRecorder + getUserMedia + Web Audio API visualization demo, by Chris Mills (source on Github.)
- simpl.info MediaStream Recording demo, by Sam Dutton.
Navigator.getUserMedia