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LeetCode Unsolved (non-locked) Problem Numbers

Show Number of Solved/Unsolved/Total Non-locked Problems on Leetcode

  1. // ==UserScript==
  2. // @name         LeetCode Unsolved (non-locked) Problem Numbers
  3. // @description:en Show Number of Solved/Unsolved/Total Non-locked Problems on Leetcode
  4. // @namespace    https://greatest.deepsurf.us/en/users/114838-groundzyy
  5. // @version      0.2
  6. // @author       groundzyy
  7. // @match        https://leetcode.com/problemset/*
  8. // @description Show Number of Solved/Unsolved/Total Non-locked Problems on Leetcode
  9. // ==/UserScript==
  10.  
  11. (function() {
  12.     'use strict';
  13.      observeDomChange();
  14. })();
  15.  
  16. function observeDomChange() {
  17.     var MutationObserver = window.MutationObserver;
  18.     var myObserver       = new MutationObserver (mutationHandler);
  19.     var obsConfig        = {
  20.         childList: true, attributes: true,
  21.         subtree: true,   attributeFilter: ['list-group']
  22.     };
  23.     myObserver.observe(document, obsConfig);
  24.     function mutationHandler (mutationRecords) {
  25.         var locked = "div > i.fa-lock";
  26.         var num_locked = $(locked).length;
  27.         $(locked).parent().parent().parent().hide();
  28.         if ($('#welcome strong').length == 1) {
  29.             info = $('#welcome strong').text();
  30.             num_finished = Number(info.split('/')[0]);
  31.             num_questions = Number(info.split('/')[1]);
  32.             num_unlocked = num_questions - num_locked;
  33.             $('#welcome').append(' (Locked: ' + num_locked + ')<br />You have solved: <strong>' + num_finished + "/" + num_unlocked + ' (' + (num_unlocked - num_finished) + ')</strong> remain');
  34.         }
  35.     }
  36. }