ServiceWorker: error event
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Note: This feature is available in Web Workers.
The error event fires whenever an error occurs in the service worker.
Syntax
Use the event name in addEventListener():
js
addEventListener("error", (event) => { })
Alternatively, assign to the event handler property of the interface:
js
onerror = (event) => { }
Event type
A generic Event.
Example
The following code snippet gets a handle to the ServiceWorker object via ServiceWorkerRegistration.active and sets up an onerror handler on the resulting object:
js
// in the page being controlled
if (navigator.serviceWorker) {
navigator.serviceWorker.register("service-worker.js");
navigator.serviceWorker.ready.then((registration) => {
registration.active.onerror = (event) => {
console.log("An error occurred in the service worker!");
};
});
}
Specifications
| Specification |
|---|
| HTML # handler-abstractworker-onerror |