WindowEventHandlers.onunhandledrejection

Властивість onunhandledrejection домішки WindowEventHandlers - це EventHandler для обробки подій unhandledrejection. Ці події виникають для необроблених відхилень об'єктів Promise.

Синтаксис

window.onunhandledrejection = function;

Значення

function - це EventHandler або функція, яку треба викликати, коли вікно отримує події unhandledrejection. Обробник подій отримує вхідний параметр як PromiseRejectionEvent.

Приклади

Цей приклад просто виводить у консоль значення reason (причина) необроблених відхилень.

window.onunhandledrejection = function(e) {
  console.log(e.reason);
}

Специфікації

Специфікація	Статус	Коментар
HTML Living Standard The definition of 'onunhandledrejection' in that specification.	Living Standard	Початкове визначення.

Сумісність з веб-переглядачами

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`onunhandledrejection`	Chrome Full support 49	Edge Full support ≤79	Firefox Full support 69 Full support 69 Full support 68 Disabled Disabled From version 68: this feature is behind the `dom.promise_rejection_events.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. Partial support 55 Notes Disabled Notes This event handler was added in Firefox 55 but was disabled since it wasn't fully implemented. It was fully implemented in Firefox 68 and enabled by default in Firefox 69. Disabled From version 55: this feature is behind the `dom.promise_rejection_events.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE No support No	Opera Full support 36	Safari Full support 11	WebView Android Full support 49	Chrome Android Full support 49	Firefox Android Full support 68 Disabled Full support 68 Disabled Disabled From version 68: this feature is behind the `dom.promise_rejection_events.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. Partial support 55 Notes Disabled Notes This event handler was added in Firefox 55 but was disabled since it wasn't fully implemented. It was fully implemented in Firefox 68 but not enabled by default. Disabled From version 55: this feature is behind the `dom.promise_rejection_events.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	Opera Android No support No	Safari iOS Full support 11.3	Samsung Internet Android Full support 5.0

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.
User must explicitly enable this feature.: User must explicitly enable this feature.