Add-ons

webRequest.Streamfilter.error

A string that will contain an error message after the onerror event has fired.

Browser compatibility

ChromeEdgeFirefoxFirefox for AndroidOpera
Basic support No No5757 No

Examples

This example adds an onerror listener which logs the value of error.

function listener(details) {
  let filter = browser.webRequest.filterResponseData("12345");

  filter.onerror = event => {
    console.log(`Error: ${filter.error}`);
  }

  //return {}; // not needed
}

browser.webRequest.onBeforeRequest.addListener(
  listener,
  {urls: ["<all_urls>"], types: ["main_frame"]},
  ["blocking"]
);

Document Tags and Contributors

Contributors to this page: kernp, wbamberg
Last updated by: kernp,