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Study.com Quiz Answers

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

目前为 2022-02-28 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        Study.com Quiz Answers
  3. // @namespace   https://greasyfork.org/en/users/668659-denvercoder1
  4. // @match       *://*.study.com/*
  5. // @include     https://study.com/*
  6. // @grant       none
  7. // @version     1.3
  8. // @author      Jonah Lawrence
  9. // @license     MIT
  10. // @description Highlights correct answers with a green background on Study.com quizes and exams
  11. // ==/UserScript==
  12.  
  13. /* jshint esversion: 6 */
  14.  
  15. (function () {
  16.   const interval = setInterval(function () {
  17.     // add styling for highlighting correct answers
  18.     // quiz answers will at this point already be highlighted since they have this attribute
  19.     const styles = '[data-correct="true"] { background: #c5ff81; box-shadow: 0 0 0 14px #c5ff81; border-radius: 2px; }';
  20.     document.getElementsByTagName("head")[0].insertAdjacentHTML("beforeend", `<style>${styles}</style>`);
  21.     // get exam container
  22.     const container = document.querySelector("#practice-exam-container");
  23.     // check if the element exists (only on exam pages)
  24.     if (!container) {
  25.       // disable interval and exit function since this is not an exam
  26.       return clearInterval(interval);
  27.     }
  28.     // if this is an exam, get the Controller
  29.     const controller = angular.element(container).controller();
  30.     // wait for the controller to be loaded
  31.     if (controller) {
  32.       // get the questions list
  33.       const questions = controller.questionByQuestionInstanceId;
  34.       // highlight the correct answer to each question
  35.       Object.values(questions).forEach(function (x) {
  36.         const correctAnswer = document.querySelector(`li[ng-class*="${x.correctQuizQuestionOptionId}"]`);
  37.         // check that element for the correct answer exists on the page
  38.         if (correctAnswer) {
  39.           // mark answer as correct so it can be highlighted
  40.           correctAnswer.dataset.correct = true;
  41.           // no need to keep checking
  42.           clearInterval(interval);
  43.         }
  44.       });
  45.     }
  46.   }, 500);
  47. })();