This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The RTCPeerConnection.onidpvalidationerror event handler is a property containing the code to execute whent the idpvalidationerror event, of type RTCIdentityErrorEvent, is received by this RTCPeerConnection. Such an event is sent when the associated identity provider (IdP) encounters an error while validating an identity assertion.
peerconnection.onidpvalidationerror = function;
function is the name of a user-defined function, without the () suffix or any parameters, or an anonymous function declaration, such as function(event) {...}. An event handler always has one single parameter, containing the event, here of type RTCIdentityErrorEvent.pc.onidpvalidationerror = function(ev) { alert("onidpvalidationerror event detected!"); };
 | Specification | Status | Comment | 
|---|---|---|
| WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCPeerConnection.onidpvalidationerror' in that specification.  |  Candidate Recommendation | Initial specification. | 
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | 56 | Yes | 22 | ? |  43
  | 
? | 
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | 56 | 56 | Yes | 44 |  43
  | 
? | 6.0 | 
idpvalidationerror event and its type, RTCIdentityErrorEvent.
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    https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/onidpvalidationerror