only_display_facebook_ads.js

/**
 * Only display Facebook Ads
 * in your news feed
 */
const renderFacebookAds = () => {
  'use strict';

  const userPosts = document.querySelectorAll('[id*="hyperfeed_story_id"]');

  Array.from(userPosts).map(userPost => {
    const isSponsoredPost = userPost.querySelector('span[class*=r_]');
    if (!isSponsoredPost) userPost.style.display = 'none';
  });
};

document.body.onkeyup = event => {
  if (event.keyCode == 32) renderFacebookAds();
  if (event.keyCode == 67 && event.ctrlKey) renderFacebookAds();
};