The following are event handlers (and their corresponding event handler event types) which must be supported, as event handler IDL attributes, by objects implementing the PresentationRequest interface:
| Event handler | Event handler event type | 
|---|---|
onconnectionavailable |  connectionavailable |  
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
onconnectionavailable | 
48  | 
79  | 
51-88  | 
No  | 
35  | 
No  | 
No  | 
48  | 
51-79  | 
35  | 
No  | 
5.0  | 
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    https://developer.mozilla.org/en-US/docs/Web/API/PresentationRequest/onconnectionavailable