Bulk delete Last.FM scrobbles & loved tracks

lastfm_delete_loved.js

// On the Last.FM website go to the page which lists the tracks that you have loved.
// Open Chrome DevTools (or Firefox or any modern browser that has a built in Javacript Console)
// and run the following command.
// This basically clicks on all the delete buttons on the page and reloads the page.
jQuery('.love-button--loved').each(function(_, b) {
  b.click();
});
location.reload();

lastfm_delete_scrobbled.js

// On the Last.FM website go to the page which lists the tracks that you have scrobbled.
// Open Chrome DevTools (or Firefox or any modern browser that has a built in Javacript Console)
// and run the following command.
// This basically clicks on all the delete buttons on the page and reloads the page. 
jQuery('.dropdown-menu-clickable-item').each(function(_, b) {
  b.click();
});
location.reload();

Confirming that @dfbadawi's method worked as of 2021-12-01.

Looks like the JS to use for deleting is now:

jQuery('.more-item--delete').each(function(_, b) {
    b.click()
});
location.reload()

Right now, the server has a limit on the number of requests in a certain period of time. So we have to add a delay between the removal of likes.

(async () => {
  const DELAY = 5_000;
  const likes = $$('.chartlist-love-button');
  for (const like of Array.from(likes)) {
    like.click();
    await new Promise((resolve) => setTimeout(resolve, DELAY));
  }
  location.reload();
})();