一个适用于新版本DGUT U学院的脚本，支持自动播放视频，调整倍速，并从官方API获取章节测验答案。
// ==UserScript==
// @name DGUT Ulearning Tool
// @version 1.1.0
// @match https://ua.dgut.edu.cn/learnCourse/learnCourse.html*
// @description 一个适用于新版本DGUT U学院的脚本，支持自动播放视频，调整倍速，并从官方API获取章节测验答案。
// @run-at document-end
// @grant GM_xmlhttpRequest
// @license MIT
// @namespace https://greasyfork.org/users/1537344
// ==/UserScript==
(function () {
'use strict';
let video_speed = 6;
let logBox;
class AnswerVideo {
constructor() { }
getType(questionNode) {
const tag = questionNode.querySelector('.question-type-tag');
if (!tag) return null;
const text = tag.textContent.trim();
if (text.includes('单选题')) return 'single';
if (text.includes('多选题')) return 'multiple';
if (text.includes('判断题')) return 'judge';
if (text.includes('填空题')) return 'blank';
return null;
}
answerQuestions(questionId, answerList) {
const questionNode = document.querySelector(`#question${questionId}`);
if (!questionNode) {
Yukilog(`Qusetion ${questionId} called: ${type}`);
return;
}
const type = this.getType(questionNode);
if (!type) {
Yukilog(`Unknown Type Qusetion called: ${type}`);
return;
}
switch (type) {
case 'single':
this.choice(questionNode, answerList);
break;
case 'multiple':
this.choice(questionNode, answerList);
break;
case 'judge':
this.judge(questionNode, answerList);
break;
case 'blank':
this.blank(questionNode, answerList);
break;
default:
Yukilog(`Unsupported question type: ${type} for question ${questionId}`);
}
}
choice(questionNode, answerList) {
const choiceItems = questionNode.querySelectorAll('.choice-item');
choiceItems.forEach(item => {
const optionLetter = item.querySelector('.option')?.textContent?.trim().replace('.', '');
if (optionLetter && answerList.includes(optionLetter)) {
const checkbox = item.querySelector('.checkbox');
if (checkbox && !checkbox.classList.contains('selected')) {
item.click();
Yukilog(`已勾选选项 ${optionLetter}`);
}
}
});
Yukilog(`选择题选择: ${answerList}`);
}
judge(questionNode, answerList) {
const isCorrect = String(answerList) === 'true';
const btnClass = isCorrect ? '.right-btn' : '.wrong-btn';
const btn = questionNode.querySelector(btnClass);
if (btn && !btn.classList.contains('selected')) {
btn.click();
Yukilog(`判断题选择: ${isCorrect ? 'true' : 'false'}`);
}
}
blank(questionNode, answerList) {
Yukilog(`填空题自动作答功能尚未实现`);
}
}
function Yukilog(msg) {
console.log(`DGUT Ulearning Tool: ${msg}`);
if (logBox) {
logBox.innerHTML += msg.replace(/\n/g, "<br>") + "<br>";
logBox.scrollTop = logBox.scrollHeight;
}
}
function controlPanel() {
const controlPanel = document.createElement("div");
controlPanel.style.cssText = `
position: fixed;
top: 100px;
right: 30px;
z-index: 999999;
background: rgba(0,0,0,0.6);
color: #fff;
padding: 10px 12px;
border-radius: 8px;
font-size: 14px;
width: 250px;
cursor: move;
`;
controlPanel.innerHTML = `
<div>DGUT Ulearning Tools</div>
<div style="margin-top:6px;">视频播放倍速: <span id="speedVal">${video_speed}</span>x</div>
<button id="speedUp" style="margin:4px;">➕</button>
<button id="speedDown" style="margin:4px;">➖</button>
<div style="margin-top:8px;">输出:</div>
<div id="logBox" style="height:150px;overflow:auto;background:#111;padding:4px;border-radius:4px;font-size:12px; line-height: 1.5;"></div>
`;
document.body.appendChild(controlPanel);
document.getElementById("speedUp").onclick = () => controlSpeed(1);
document.getElementById("speedDown").onclick = () => controlSpeed(-1);
logBox = document.getElementById("logBox");
controlPanel.onmousedown = function (e) {
let offsetX = e.clientX - controlPanel.offsetLeft;
let offsetY = e.clientY - controlPanel.offsetTop;
document.onmousemove = function (e) {
controlPanel.style.left = e.clientX - offsetX + "px";
controlPanel.style.top = e.clientY - offsetY + "px";
};
document.onmouseup = function () { document.onmousemove = null; };
};
}
function controlSpeed(speed) {
video_speed = video_speed + speed;
if (video_speed < 1) {
video_speed = 1;
Yukilog("补药再减速啦 O (≧口≦)O");
}
document.getElementById("speedVal").innerText = video_speed;
const video = document.querySelector("video");
if (video) video.playbackRate = video_speed;
Yukilog(`视频播放倍速调整为 ${video_speed}x`);
}
function init() {
new MutationObserver((mutations, observer) => {
main();
}).observe(document.body, { childList: true, subtree: true });
main();
}
function main() {
const video = document.querySelector('video');
if (video && !video.dataset.hooked) {
video.dataset.hooked = 'true';
Yukilog("(´ ∀ ` *) 找到视频，开始刷课啦！");
video.playbackRate = video_speed;
video.muted = true; // mute the video by default
video.play().catch(e => Yukilog("播放失败，请手动点击一次。"));
const intervalId = setInterval(() => {
if (!document.contains(video)) {
clearInterval(intervalId);
return;
}
video.playbackRate = video_speed;
if (video.paused) video.play();
}, 2000);
video.addEventListener("ended", () => {
Yukilog("视频播放结束。");
goNext();
});
}
const quizPanel = document.querySelector(".question-setting-panel");
if (quizPanel && !quizPanel.dataset.hooked) {
quizPanel.dataset.hooked = 'true';
Yukilog("检测到做题页面，开始获取答案...");
let result = getElementsId();
result.forEach(({ questionId, parentId }) => {
fetchAnswers(questionId, parentId);
});
submitQuiz();
}
}
function submitQuiz() {
const btn = document.querySelector('.btn-submit');
if (btn) {
btn.click();
} else {
setTimeout(btn.click(), 1000);
}
}
function goNext() {
Yukilog("(* ^ ω ^) 视频播放完毕，自动跳下一节...");
let nextBtn = document.querySelector(".next-btn,.btn-next,.nextVideoBtn,.mobile-next-page-btn");
if (nextBtn && !nextBtn.classList.contains('disabled')) {
nextBtn.click();
} else {
Yukilog("未找到或无法点击下一节按钮，可能是本章结束。");
}
}
function getElementsId() {
const result = [];
let parentId = $('.page-name.active').parent().attr('id').substring(4);
const questionElements = document.querySelectorAll('.question-element-node');
questionElements.forEach(node => {
const wrapper = node.querySelector('[id^="question"]') || node;
if (wrapper && wrapper.id.startsWith('question')) {
const questionId = wrapper.id.replace('question', '');
result.push({ parentId, questionId });
}
});
return result;
}
function getUAAuth() {
let uaAuth = document.cookie.split(";")
.map(c => c.trim().split("="))
.find(([k, v]) => k === "AUTHORIZATION")?.[1] || "";
if (!uaAuth) Yukilog("未找到 UA-AUTHORIZATION!");
return uaAuth;
}
function fetchAnswers(questionId, parentId) {
const uaAuth = getUAAuth();
if (!uaAuth) return Yukilog("UA-AUTHORIZATION 为空，无法请求");
GM_xmlhttpRequest({
method: "GET",
url: `https://ua.dgut.edu.cn/uaapi/questionAnswer/${questionId}?parentId=${parentId}`,
headers: {
"UA-AUTHORIZATION": uaAuth,
"X-Requested-With": "XMLHttpRequest",
"Referer": window.location.href
},
onload: function (res) {
try {
const data = JSON.parse(res.responseText);
const answerList = data.correctAnswerList || [];
console.log("题目答案抓取成功:", data);
const answerer = new AnswerVideo();
if (answerList.length > 0) {
answerer.answerQuestions(questionId, answerList);
}
} catch (e) {
console.error("解析答案失败", e, res.responseText);
}
},
onerror: function (err) {
console.error("拉取答案失败", err);
}
});
}
// START
controlPanel();
setTimeout(init, 2000);
})();