An event handler that will be called when the stream has no more data to deliver. In the event handler you can still call filter functions such as write(), disconnect(), or close().
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | ||||
|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Firefox for Android | |
| Basic support | Chrome No support No | Edge No support No | Firefox Full support 57 | Opera No support No | Firefox Android Full support 57 |
Legend
- Full support
- Full support
- No support
- No support
Examples
This example will append "extra stuff" to the response:
function listener(details) {
let filter = browser.webRequest.filterResponseData(details.requestId);
let encoder = new TextEncoder();
filter.ondata = event => {
// pass through all the response data
filter.write(event.data);
}
filter.onstop = event => {
filter.write(encoder.encode("extra stuff"));
filter.disconnect();
}
}
browser.webRequest.onBeforeRequest.addListener(
listener,
{urls: ["https://example.com/*"], types: ["main_frame"]},
["blocking"]
);