slcolibrary-newFeatureFilmFilter.user.js

// ==UserScript==
// @name         Hide Rated R Movies on Feature Films page
// @namespace    http://stevespiga.rel.li/
// @version      0.1
// @description  try to take over the world!
// @author       Steve Spigarelli
// @match        https://www.slcolibrary.org/mm/mmmo/newFeatureFilms.htm
// @grant        none
// ==/UserScript==

$.expr[':'].icontains = function(a, i, m) {
  return jQuery(a).text().toUpperCase()
      .indexOf(m[3].toUpperCase()) >= 0;
};

(function() {
    'use strict';

    // find all author class element with 'rated r' in the text - hide the parent div
    $(".author:icontains('rated r')").each(function(i, ele) { $(ele.closest("div.maincol")).hide(); });

    // add rotten tomatoes search to each movie
    $('.itemdescr').each(function(idx, item) { var title = $(item).find('strong'); $(title).wrap('<a href="https://www.rottentomatoes.com/search/?search='+$(title).text()+'" target="_blank">Rotten Tomatoes</a>'); });
})();