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ServiceWorkerContainer: error event

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The error event fires when an error occurs in the service worker.

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

addEventListener("error", (event) => {});

onerror = (event) => {};

Event type

A generic Event.

Example

navigator.serviceWorker.onerror = (errorevent) => {
  console.error(`received error message: ${errorevent.message}`);
};

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`error_event`	No	No	44–106	No	No	No	No	No	44–106	No	No	No

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https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerContainer/error_event