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webwork_extension

Adds correct ratio to each homework.

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  1. // ==UserScript==
  2. // @name         webwork_extension
  3. // @namespace    webwrok.math.ntu.edu.tw
  4. // @version      3.4
  5. // @description  Adds correct ratio to each homework.
  6. // @author       bert30702, oToToT, WengH
  7. // @match        *://*.webwork.math.ntu.edu.tw/*
  8. // @match        *://webwork.marianopolis.com/*
  9. // @match        *://wwserver.marianopolis.com/*
  10. // @grant        none
  11. // ==/UserScript==
  12.  
  13. (async function(){
  14.   
  15.   function parseScore(str) {
  16.     return parseFloat(str);
  17.   }
  18.   
  19.   function round(f) {
  20.     return Math.round(f * 10) / 10;
  21.   }
  22.   
  23.   function getGrade(html_text) {
  24.     var m = {};
  25.     let d = new DOMParser();
  26.     let doc = d.parseFromString(html_text, 'text/html');
  27.     let nodes = doc.querySelectorAll("#grades_table tr:not([class=grades-course-total])");
  28.     
  29.     nodes.forEach(function(ele) {
  30.       let e = ele.getElementsByTagName('td');
  31.       if (e.length > 3) {
  32.         m[e[0].innerText] = [parseScore(e[1].innerText), parseScore(e[2].innerText)];
  33.       }
  34.     });
  35.     
  36.     return m;
  37.   }
  38.   
  39.   let grades_url = location.pathname + "/grades/";
  40.   let grades_html = await (await fetch(grades_url)).text();
  41.   let map = getGrade(grades_html);
  42.   
  43.   document.querySelectorAll('td a').forEach(function(ele) {
  44.     // to hide score in closed problems, please uncomment the statement below
  45.     // if (ele.parentNode.parentNode.innerText.includes('closed')) return;
  46.     
  47.     let key = ele.innerText;
  48.     let span = document.createElement("span");
  49.     
  50.     if (!map[key]) return;
  51.     
  52.     let score = map[key][0];
  53.     let total = map[key][1];
  54.     
  55.     if (total == 100) {
  56.       span.innerText = ` ${score}%`;
  57.     }
  58.     else {
  59.       span.innerText = ` ${round(score / total * 100)}% (${score} / ${total})`;
  60.     }
  61.     
  62.     if (score >= total) {
  63.       span.style.color = '#00a000'
  64.     }
  65.     else if (score === 0) {
  66.       span.style.color = '#ff0000'
  67.     }
  68.     else if (score <= 0.6 * total) {
  69.       span.style.color = '#c14900'
  70.     }
  71.     else {
  72.       span.style.color = '#1e90ff'
  73.     }
  74.     
  75.     ele.parentNode.appendChild(span);
  76.   });
  77. })();