google_search_results_filter_lite.user.js

// ==UserScript==
// @name          Google Search Results Filter Lite, semi-auto, domain-based
// @author        zeeLime
// @description   Hides search results from specified domains. Requires manual configuration directly in the script code, but simple as F.
// @include       *://*.google.*/search*
// @version       2022.08.10.12.17.11
// @license       WTFPL
// ==/UserScript==

(function() {
  var hide_results_from_these_domains = [
    'adoclib.com',
    'anycodings.com',
    'apidock.com',
    'libhunt.com',
    'stackshare.io',
    'zditect.com',
    'appsloveworld.com',
  ];

  var hidden_background_colour = "#E0E0E0";
  var escape_regex = function(string) { return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); };
  var regex = new RegExp("\\b("+hide_results_from_these_domains.map(escape_regex).join("|")+")\\b", "i");
  var filtered_results = [];
  var filtered_domains = [];
  var results = document.getElementById('rso').getElementsByClassName('g');

  for (var result of results) {
    var a = result.getElementsByTagName('a')[0];
    var url = new URL(a.href);
    var domain = url.hostname.replace("www.","");
    if (a.href.startsWith("/url")){
      a.href = url.searchParams.get("url");
    }

    if (regex.test(a.href) && !filtered_results.includes(result)) {
      result.style.setProperty('background-color', hidden_background_colour, '');
      filtered_results.push(result);
      if (!filtered_domains.includes(domain)){
        filtered_domains.push(domain);
      };
    }
  }

  if (filtered_results.length > 0) {
    var report = document.createElement('span');
    // Q: Why colour, and not color?
    // A: https://twitter.com/Queen_UK/status/661521043538997248
    var result_title_colour = getComputedStyle(filtered_results[0].getElementsByTagName('h3')[0]).getPropertyValue("color");
    report.style.setProperty('color', result_title_colour, '');

    var toggleDisplay = function() {
      var toListSentence = function(arr) {
        return arr.length < 3 ? arr.join(' and ') : "".concat(arr.slice(0, -1).join(', '), ", and ").concat(arr[arr.length - 1]);
      };

      var display = filtered_results[0].style.display;
      display = (display == '' ? 'none' : '');

      for (var filtered_result of filtered_results){
        filtered_result.style.display = display;
      }

      var many = filtered_results.length > 1;

      report.innerHTML = [
        '&nbsp;',
        filtered_results.length,
        (many ? 'results' : 'result'),
        'from',
        toListSentence(filtered_domains),
        (many ? 'were' : 'was'),
        'filtered out. Click here to',
        (display == '' ? 'hide.' : 'show.')
      ].join(' ');
    };

    report.addEventListener('click', toggleDisplay, true);
    document.getElementById('result-stats').append(report);
    toggleDisplay();
  };
})();