browsingData.removeFormData()

Clears data that the browser has saved for autofilling forms.

You can use the removalOptions parameter, which is a browsingData.RemovalOptions object, to:

• clear only form data entered after a given time
• control whether to clear only form data entered in normal web pages or to clear data entered in hosted apps and extensions as well.

This is an asynchronous function that returns a Promise.

removalOptions

object. A browsingData.RemovalOptions object, which may be used to clear only form data entered after a given time, and whether to clear only form data entered in normal web pages or to clear data entered in hosted apps and extensions as well.

A Promise that will be fulfilled with no arguments when the removal has finished. If any error occurs, the promise will be rejected with an error message.

Remove form data saved in the last week:

function onRemoved() {
  console.log("removed");
}

function onError(error) {
  console.error(error);
}

function weekInMilliseconds() {
  return 1000 * 60 * 60 * 24 * 7;
}

let oneWeekAgo = (new Date()).getTime() - weekInMilliseconds();

browser.browsingData.removeFormData(
  {since: oneWeekAgo}).
then(onRemoved, onError);

Remove all saved form data:

function onRemoved() {
  console.log("removed");
}

function onError(error) {
  console.error(error);
}

browser.browsingData.removeFormData({}).
then(onRemoved, onError);