fb-embed.html

<figure
  data-embed-type="facebook"
  data-embed-url="https://www.facebook.com/scroll.in/videos/1289835134432697/"
  data-embed-loaded="false">
  <div
    class="fb-video"
    data-href="https://www.facebook.com/scroll.in/videos/1289835134432697/"
    data-allowfullscreen="true"
    data-width="auto">
  </div>
</figure>

lazy-x-fb.js

window.fbAsyncInit = function () {
  window.FB.init({
    appId: 'YOUR_APP_ID',
    version: 'v2.x',
    xfbml: true
  });
  window.FB.XFBML.parse();
};

export function facebook ($node) {
  var $div = $node.find('div');
  if ($(window).width() > 400) {
    $div.attr('data-width', parseInt($node.parent().width(), 10));
  } else {
    $div.attr('data-width', 'auto');
  }
  if (typeof window.FB !== 'undefined' && window.FB.XFBML) {
    window.FB.XFBML.parse($div[0]);
  } else {
    var fbroot = document.getElementById('fb-root');
    if (fbroot === null) {
      fbroot = document.createElement('div');
      fbroot.id = 'fb-root';
      document.getElementsByTagName('body')[0].appendChild(fbroot);
      $.getScript('https://connect.facebook.net/en_US/sdk.js');
    }
  }
};