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Youtube comments remover and description expander

Removes comments section from Youtube video pages and auto expand description section

当前为 2017-08-11 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        Youtube comments remover and description expander
  3. // @description Removes comments section from Youtube video pages and auto expand description section
  4. // @include     /^http(|s)://www\.youtube\.com/watch\?v=.*$/
  5. // @grant       none
  6. // @author      iceman94
  7. // @copyright   2015+, iceman94
  8. // @version     0.01
  9. // @grant       none
  10. // @namespace   38a3e9648fc5260c75446e376a8dabb3
  11. // ==/UserScript==
  12.  
  13.  
  14. //=======================================================================================================
  15. // Cross-browsers load function
  16. // Tests in this order :
  17. // -support for jQuery API
  18. // |-uses $(window).load method if available
  19. // |-uses $(window).ready method if available
  20. // -support for DOMContentLoaded event (compatible only with the following browsers :
  21. // Chrome >= 0.2; Firefox >= 1.0; IE >= 9.0; Opera >= 9.0; Safari >= 3.1)
  22. // -support for document.attachEvent
  23. // -uses setTimeout w/ 5000ms delay
  24. //=======================================================================================================
  25.  
  26. function XBLoad(func, verbose)
  27. {
  28.     verbose = verbose || false;
  29.  
  30.     if (window.jQuery)
  31.     {
  32.         if ($(window).load)
  33.         {
  34.             if (verbose == true) { console.log('Javascript loaded using $(window).load method'); };
  35.             return $(window).load(function() { func(); });
  36.         }
  37.         else if ($(window).ready)
  38.         {
  39.             if (verbose == true) { console.log('Javascript loaded using $(window).ready method'); };
  40.             return $(window).ready(function() { func(); });
  41.         };        
  42.     }
  43.     else if (document.addEventListener)
  44.     {
  45.         if (verbose == true) { console.log('Javascript loaded using document.addEventListener method'); };
  46.         document.addEventListener('DOMContentLoaded', function(event)
  47.         {
  48.             return func();
  49.         });
  50.     }
  51.     else if (document.attachEvent)
  52.     {
  53.         if (verbose == true) { console.log('Javascript loaded using document.attachEvent method'); };
  54.         document.attachEvent('load', function()
  55.         {
  56.             return func();
  57.         });
  58.     }
  59.     else
  60.     {
  61.         if (verbose == true) { console.log('Javascript loaded using setTimeout method'); };
  62.         return setTimeout(function() { func(); }, 5000);
  63.     };
  64. };
  65.  
  66. //=======================================================================================================
  67. // Setting up functions
  68. //=======================================================================================================
  69.  
  70. // Searches for string in a given array and returns an object comprised of an index and its content
  71. function searchStringInArray (str, arr)
  72. {
  73.     var obj = {};
  74.     for (var i=0; i<arr.length; i++)
  75.     {
  76.         if (arr[i].match(str))
  77.         {
  78.             obj.idx = i;
  79.             obj.content = arr[i];
  80.             return obj;
  81.         }
  82.     }
  83.     return -1;
  84. }
  85.  
  86. // Deletes a DOM node based of its type (id, tag or class)
  87. function delElement (elmt_type, elmt_name)
  88. {
  89.     switch (elmt_type)
  90.     {
  91.         case 'id':
  92.             var tgt = document.getElementById(elmt_name);
  93.             break;
  94.         case 'tag':
  95.             var tgt = document.getElementsByTagName(elmt_name)[0];
  96.             break;
  97.         case 'class':
  98.             var tgt = document.getElementsByClassName(elmt_name)[0];
  99.             break;
  100.         default:
  101.             console.log("delElement syntax error\nUsage:\n  delElement(<[id|tag|class]>, <elmt_name>)");
  102.             return -1;
  103.     }
  104.     tgt.parentNode.removeChild(tgt);
  105. }
  106.  
  107. // Deletes index from a given array by value
  108. function delIdxFromArrayByValue (str, arr)
  109. {
  110.     if (searchStringInArray(str, arr))
  111.     {
  112.         arr.splice(searchStringInArray(str, arr).idx, 1);
  113.     }
  114. }
  115.  
  116. // Wrapper comprised of all functions to be called by the GM/TM script
  117. function showtime ()
  118. {
  119.     delElement('id', 'watch-discussion');
  120.     
  121.     var dscNode = document.getElementById('action-panel-details');
  122.     var dscClassesArr = dscNode.className.split(' ');
  123.     delIdxFromArrayByValue('yt-uix-expander-collapsed', dscClassesArr);
  124.     dscNode.className = dscClassesArr.join(' ');
  125. }
  126.  
  127.  
  128. //=======================================================================================================
  129. // Showtime !
  130. //=======================================================================================================
  131.  
  132. XBLoad(showtime());