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NavigateEvent: signal property - Web APIs | MDN
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NavigateEvent: signal property
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The signal read-only property of the
NavigateEvent interface returns an AbortSignal, which will become aborted if the navigation is cancelled (e.g., by the user pressing the browser's "Stop" button, or another navigation starting and thus cancelling the ongoing one).
Value
An AbortSignal object.
Examples
The general idea here is that the signal property can be passed to an associated fetch() operation so that if the navigation is cancelled, the fetch() operation can be safely aborted, avoiding wasting bandwidth on fetches that are no longer needed.
js
navigation.addEventListener("navigate", (event) => {
event.intercept({
async handler() {
// …
await fetch(`/img/some-image.jpg`, { signal: event.signal });
// …
},
});
});
Note: See Example: next/previous buttons for a more detailed example.
Specifications
| Specification |
|---|
| HTML # dom-navigateevent-signal-dev |
Browser compatibility
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