Bootswatch bookmarklet - Updated 2020

bookmarklet

javascript:(function(e%2Ca%2Cg%2Ch%2Cf%2Cc%2Cb%2Cd)%7Bif(!(f%3De.jQuery)%7C%7Cg%3Ef.fn.jquery%7C%7Ch(f))%7Bc%3Da.createElement(%22script%22)%3Bc.type%3D%22text%2Fjavascript%22%3Bc.src%3D%22%2F%2Fajax.googleapis.com%2Fajax%2Flibs%2Fjquery%2F%22%2Bg%2B%22%2Fjquery.min.js%22%3Bc.onload%3Dc.onreadystatechange%3Dfunction()%7Bif(!b%26%26(!(d%3Dthis.readyState)%7C%7Cd%3D%3D%22loaded%22%7C%7Cd%3D%3D%22complete%22))%7Bh((f%3De.jQuery).noConflict(1)%2Cb%3D1)%3Bf(c).remove()%7D%7D%3Ba.documentElement.childNodes%5B0%5D.appendChild(c)%7D%7D)(window%2Cdocument%2C%221.3.2%22%2Cfunction(%24%2CL)%7Bif(%24(%22.bootswatcher%22)%5B0%5D)%7B%24(%22.bootswatcher%22).remove()%7Delse%7Bvar%20%24e%3D%24('%3Cselect%20class%3D%22bootswatcher%22%3E%3Coption%3Ecerulean%3C%2Foption%3E%3Coption%3Ecosmo%3C%2Foption%3E%3Coption%3Ecyborg%3C%2Foption%3E%3Coption%3Edarkly%3C%2Foption%3E%3Coption%3Eflatly%3C%2Foption%3E%3Coption%3Ejournal%3C%2Foption%3E%3Coption%3Elitera%3C%2Foption%3E%3Coption%3Elumen%3C%2Foption%3E%3Coption%3Elux%3C%2Foption%3E%3Coption%3Emateria%3C%2Foption%3E%3Coption%3Eminty%3C%2Foption%3E%3Coption%3Epulse%3C%2Foption%3E%3Coption%3Esandstone%3C%2Foption%3E%3Coption%3Esimplex%3C%2Foption%3E%3Coption%3Esketchy%3C%2Foption%3E%3Coption%3Eslate%3C%2Foption%3E%3Coption%3Esolar%3C%2Foption%3E%3Coption%3Espacelab%3C%2Foption%3E%3Coption%3Esuperhero%3C%2Foption%3E%3Coption%3Eunited%3C%2Foption%3E%3Coption%3Eyeti%3C%2Foption%3E%3C%2Fselect%3E')%3Bvar%20l%3D1%2BMath.floor(Math.random()*%24e.children().length)%3B%24e.css(%7B%22z-index%22%3A%2299999%22%2Cposition%3A%22fixed%22%2Ctop%3A%225px%22%2Cright%3A%225px%22%2Copacity%3A%220.5%22%2Ccolor%3A%22%23000%22%7D).hover(function()%7B%24(this).css(%22opacity%22%2C%221%22)%7D%2Cfunction()%7B%24(this).css(%22opacity%22%2C%220.5%22)%7D).change(function()%7Bif(!%24(%22link.bootswatcher%22)%5B0%5D)%7B%24(%22head%22).append('%3Clink%20rel%3D%22stylesheet%22%20class%3D%22bootswatcher%22%3E')%7D%24(%22link.bootswatcher%22).attr(%22href%22%2C%22%2F%2Fstackpath.bootstrapcdn.com%2Fbootswatch%2F4.5.2%2F%22%2B%24(this).find(%22%3Aselected%22).text().toLowerCase()%2B%22%2Fbootstrap.min.css%22)%7D).find(%22option%3Anth-child(%22%2Bl%2B%22)%22).attr(%22selected%22%2C%22selected%22).end().trigger(%22change%22)%3B%24(%22body%22).append(%24e)%7D%3B%7D)%3B

bootswatchlet_2020.js

javascript: (function (e, a, g, h, f, c, b, d) {
  if (!(f = e.jQuery) || g > f.fn.jquery || h(f)) {
    c = a.createElement('script');
    c.type = 'text/javascript';
    c.src = '//ajax.googleapis.com/ajax/libs/jquery/' + g + '/jquery.min.js';
    c.onload = c.onreadystatechange = function () {
      if (!b && (!(d = this.readyState) || d == 'loaded' || d == 'complete')) {
        h((f = e.jQuery).noConflict(1), (b = 1));
        f(c).remove();
      }
    };
    a.documentElement.childNodes[0].appendChild(c);
  }
})(window, document, '1.3.2', function ($, L) {
  if ($('.bootswatcher')[0]) {
    $('.bootswatcher').remove();
  } else {
    var $e = $(
      '<select class="bootswatcher"><option>cerulean</option><option>cosmo</option><option>cyborg</option><option>darkly</option><option>flatly</option><option>journal</option><option>litera</option><option>lumen</option><option>lux</option><option>materia</option><option>minty</option><option>pulse</option><option>sandstone</option><option>simplex</option><option>sketchy</option><option>slate</option><option>solar</option><option>spacelab</option><option>superhero</option><option>united</option><option>yeti</option></select>'
    );
    var l = 1 + Math.floor(Math.random() * $e.children().length);
    $e.css({
      'z-index': '99999',
      position: 'fixed',
      top: '5px',
      right: '5px',
      opacity: '0.5',
      color: '#000'
    })
      .hover(
        function () {
          $(this).css('opacity', '1');
        },
        function () {
          $(this).css('opacity', '0.5');
        }
      )
      .change(function () {
        if (!$('link.bootswatcher')[0]) {
          $('head').append('<link rel="stylesheet" class="bootswatcher">');
        }
        $('link.bootswatcher').attr(
          'href',
          '//stackpath.bootstrapcdn.com/bootswatch/4.5.2/' +
            $(this).find(':selected').text().toLowerCase() +
            '/bootstrap.min.css'
        );
      })
      .find('option:nth-child(' + l + ')')
      .attr('selected', 'selected')
      .end()
      .trigger('change');
    $('body').append($e);
  }
});