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Study.com Quiz Answers

Highlights correct answers with a green background on Study.com quizes and exams

2021-04-07 يوللانغان نەشرى. ئەڭ يېڭى نەشرىنى كۆرۈش.

  1. // ==UserScript==
  2. // @name        Study.com Quiz Answers
  3. // @namespace   Violentmonkey Scripts
  4. // @match       *://*.study.com/*
  5. // @include     https://study.com/*
  6. // @grant       none
  7. // @version     1.2
  8. // @author      Jonah Lawrence
  9. // @description Highlights correct answers with a green background on Study.com quizes and exams
  10. // ==/UserScript==
  11.  
  12. /* jshint esversion: 6 */
  13.  
  14. (function () {
  15.   const interval = setInterval(function () {
  16.     // add styling for highlighting quiz answers
  17.     // quiz answers will at this point already be highlighted since they have this attribute
  18.     const styles = '[data-correct="true"] { background: #c5ff81; box-shadow: 0 0 0 14px #c5ff81; border-radius: 2px; }';
  19.     document.getElementsByTagName("head")[0].insertAdjacentHTML("beforeend", `<style>${styles}</style>`);
  20.     // get exam container
  21.     const container = document.querySelector("#practice-exam-container");
  22.     // check if element exists (only on exam pages)
  23.     if (container) {
  24.       const controller = angular.element(container).controller();
  25.       if (controller) {
  26.         // get questions
  27.         const questions = controller.questionByQuestionInstanceId;
  28.         // highlight the answer to each question
  29.         Object.values(questions).forEach(function (x) {
  30.           const correctAnswer = document.querySelector(`li[ng-class*="${x.correctQuizQuestionOptionId}"]`);
  31.           if (correctAnswer) {
  32.             // mark answer as correct so it can be highlighted
  33.             correctAnswer.setAttribute("data-correct", "true");
  34.             // no need to keep checking
  35.             clearInterval(interval);
  36.           }
  37.         });
  38.       }
  39.     }
  40.     else {
  41.       // disable interval since this is not an exam
  42.       clearInterval(interval);
  43.     }
  44.   }, 500);
  45. })();