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The rejectionhandled event is fired when a JavaScript Promise is rejected, and after the rejection is handled by the promise's rejection handling code.
| Bubbles | No |
| Cancelable | No |
| Target objects | defaultView |
| Interface | PromiseRejectionEvent |
Inheritance
The rejectionhandled event implements the PromiseRejectionEvent interface, which inherits from Event. You can use the properties and methods defined on these interfaces.
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a:hover text { fill: #0095DD; pointer-events: all;}
Examples
window.addEventListener("rejectionhandled", function (event) {
console.log("Promise rejected! Reason: " + event.reason);
});
Specifications
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard The definition of 'onrejectionhandled' in that specification. |
Living Standard | Initial definition. |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | 49 | No support[1] | No support | No support | No support |
| Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | No support | No support[1] | No support | No support | No support |
[1] Firefox implements the PromiseRejectionEvent interface if you go to about:config and set the dom.promise_rejection_events.enabled pref to true. However, Firefox doesn't yet actually send the unhandledrejection or understand rejectionhandled events.