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The unhandledrejection event is fired when a JavaScript Promise is rejected but there is no rejection handler to deal with the rejection.
| Bubbles | No |
| Cancelable | No |
| Target objects | defaultView |
| Interface | PromiseRejectionEvent |
Examples
window.addEventListener("unhandledrejection", function (event) {
console.warn("WARNING: Unhandled promise rejection. Shame on you! Reason: "
+ event.reason);
});
Inheritance
The unhandledrejection event implements the PromiseRejectionEvent interface, which inherits from Event. You can use the properties and methods defined on these interfaces.
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