Quizlet Test Auto Answer

Automatically highlights and selects the correct answer for every question on Quizlet test mode. Supports multiple choice and written question types. Works across all questions simultaneously.
Installeren als gebruikersscript ?
Stel een vraag, plaats een beoordeling of rapporteer dit script.
Regels afbreken
// ==UserScript==
// @name         Quizlet Test Auto Answer
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Automatically highlights and selects the correct answer for every question on Quizlet test mode. Supports multiple choice and written question types. Works across all questions simultaneously.
// @author       apzn
// @license      MIT
// @match        https://quizlet.com/*
// @grant        unsafeWindow
// @run-at       document-idle
// ==/UserScript==

const win = unsafeWindow;

function runOnArticles() {
    win.document.querySelectorAll('article').forEach(element => {
        const fiberKey = Object.keys(element).find(k => k.startsWith('__reactFiber$'));
        if (!fiberKey) return;

        let node = element[fiberKey];
        let question = null;
        while (node) {
            if (node.memoizedProps?.question?.type) {
                question = node.memoizedProps.question;
                break;
            }
            node = node.return;
        }
        if (!question) return;

        if (question.type === 'MultipleChoiceQuestion') {
            const answerIndex = question.metadata.optionGenerationSource.findIndex(k => k === 'key');
            const container = element.querySelector('[data-testid="MCQ Answers"]');
            if (!container) return;

            const wrapper = container.children[answerIndex];
            if (!wrapper) return;

            const answerText = wrapper.querySelector('section > :nth-child(2)');
            if (answerText && answerText.style.color === 'lime') return;

            [...container.children].forEach(child => {
                const sec = child.querySelector('section > :nth-child(2)');
                if (sec) sec.style.color = '';
            });
            if (answerText) answerText.style.color = 'lime';

            const section = wrapper.querySelector('section') || wrapper;
            if (section) {
                const rect = section.getBoundingClientRect();
                section.dispatchEvent(new PointerEvent('pointerdown', { bubbles: true, clientX: rect.x + 10, clientY: rect.y + 10 }));
                section.dispatchEvent(new PointerEvent('pointerup', { bubbles: true, clientX: rect.x + 10, clientY: rect.y + 10 }));
                section.dispatchEvent(new MouseEvent('click', { bubbles: true, clientX: rect.x + 10, clientY: rect.y + 10 }));
            }

        } else if (question.type === 'WrittenQuestion') {
            if (typeof win.__NEXT_DATA__ === 'undefined') return;
            const allCards = win.__NEXT_DATA__.props.pageProps.studyModesCommon.studiableDocumentData.studiableItems;
            const card = allCards.find(c => c.id === question.metadata.studiableItemId);
            if (!card) return;
            const otherSide = card.cardSides[question.metadata.answerSide === 'definition' ? 1 : 0];
            const answer = otherSide.media[0].plainText;

            const existing = element.querySelector('#x-answer');
            if (existing) return;
            const form = element.querySelector('form');
            if (form) form.parentElement.insertAdjacentHTML('afterbegin', `<p style="color:lime;padding-bottom:10px;" id="x-answer">correct answer: ${answer}</p>`);

            const input = element.querySelector('form input, form textarea');
            if (input && input.value !== answer) {
                const setter = Object.getOwnPropertyDescriptor(win.HTMLInputElement.prototype, 'value')?.set
                    || Object.getOwnPropertyDescriptor(win.HTMLTextAreaElement.prototype, 'value')?.set;
                setter.call(input, answer);
                input.dispatchEvent(new Event('input', { bubbles: true }));
            }
        }
    });
}

const observer = new MutationObserver(() => {
    if (win.document.querySelector('article')) {
        setInterval(runOnArticles, 100);
        observer.disconnect();
    }
});

observer.observe(win.document.body, { childList: true, subtree: true });