KhanHack

Here is a Khan Academy Solver!

As of 2023-04-15. See the latest version.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         KhanHack
// @version      3.9
// @description  Here is a Khan Academy Solver!
// @author       Logzilla6
// @match        https://www.khanacademy.org/*
// @grant        none
// @namespace https://greatest.deepsurf.us/users/783447
// ==/UserScript==


(function () {
  let overlayHTML = ` <link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Roboto&display=swap" rel="stylesheet">
<div id="box">
<button class="main" id="accordian">Toggle</button>
    <div class="main" id="box2">
        <center><p class="pdark" id="pdark"> KhanHack </p></center>
        <button onclick="location.reload()" class="inputans">Reset Answer List</button>
        <br>
        <center><section><label id="ansHead">-Answers-</label></section></center>

        <center id="mainCen">
        <section><label id="ansBreak">&nbsp;</label></section>
        
        </center>
        <section><label>&nbsp;</label></section>
        <section class="toggleclass"><label>M also toggles Menu</label></section>
    </div>
</div>

<style>
#box {
    z-index: 9999;
    position: fixed;
    top: 0;
    right: 0;}
#box2 {
    padding: 15px;
    margin-bottom: 5px;
    display: grid;
    border-radius: 25px;};
section {
    display: flex;
    justify-content: space-between;margin:5px;}
.main {
    background-color: #072357;
    letter-spacing: 2px;
    font-weight: none;
    font-size: 11px;
    font-family: 'Roboto', sans-serif;
    color:white;
    webkit-user-select: all;}
.pdark {
   border-bottom:2px solid white;

   }
#accordian {
    width: 100%;
    border: 0;
    cursor: pointer;
    border-radius: 25px;}
.inputans {
    border: 0;
    cursor: pointer;
    border-radius: 25px;
    background-color: #0b40a1;
    color: white;
    font-family: 'Roboto', sans-serif;
}
.inputans:hover {
background-color: #0b378a;
}
.toggleclass {
text-align: center;
}
</style>
`



function get(x) { return document.getElementById(x); }

let overlay = document.createElement("div");
    overlay.innerHTML = overlayHTML;
    document.body.appendChild(overlay);

let acc = get("accordian"),
    darkToggle = get("darkToggle"),
    ansbutton = get("inputans"),
    ansbutton2 = get("inputans2")

acc.onclick = function() {
    let panel = get("box2");
    let acc = get("accordian")
    if (panel.style.display == "grid") panel.style.display = "none";
    else { panel.style.display = "grid";}

}

document.addEventListener('keydown', (event) => {
    if (event.key === 'm') {

      let panel = get("box2");
    if (panel.style.display == "grid") panel.style.display = "none";
    else { panel.style.display = "grid"; }
    }
});

    'use strict';
    window.loaded = false;

    class Answer {

        constructor(answer, type) {
            this.body = answer;
            this.type = type;
        }

        get isMultiChoice() {
            return this.type == "multiple_choice";
        }

        get isFreeResponse() {
            return this.type == "free_response";
        }

        get isExpression() {
            return this.type == "expression";
        }

        get isDropdown() {
            return this.type == "dropdown";
        }

        log() {
            const answer = this.body;

            answer.map(ans => {
                if (typeof ans == "string") {
                    if (ans.includes("web+graphie")) {
                        this.body[this.body.indexOf(ans)] = "";
                        this.printImage(ans);
                    } else {
                        answer[answer.indexOf(ans)] = ans.replaceAll("$", "");
                    }
                }
            });


        }


    }

    const originalFetch = window.fetch;
    window.fetch = function () {
        return originalFetch.apply(this, arguments).then(async (res) => {
            if (res.url.includes("/getAssessmentItem")) {
                const clone = res.clone();
                const json = await clone.json()
                 let item, question;


                item = json.data.assessmentItem.item.itemData;
                question = JSON.parse(item).question;


                    Object.keys(question.widgets).map(widgetName => {
                        switch (widgetName.split(" ")[0]) {
                            case "numeric-input":
                                return freeResponseAnswerFrom(question).log();
                            case "radio":
                                return multipleChoiceAnswerFrom(question).log();
                            case "expression":
                                return expressionAnswerFrom(question).log();
                            case "dropdown":
                                return dropdownAnswerFrom(question).log();
                        }
                    });
            }

            if (!window.loaded) {
                console.clear();

                window.loaded = true;
            }

            return res;
        })
    }

    let curAns = 1

    function freeResponseAnswerFrom(question) {
        const answer = Object.values(question.widgets).map((widget) => {
            if (widget.options?.answers) {
                return widget.options.answers.map(answer => {
                    if (answer.status == "correct") {

                        var parNumCurAns = "parNum" + curAns
                        var createPar = document.createElement('section')
                        createPar.innerHTML = answer.value
                        document.getElementById('ansBreak').append(createPar)

                        curAns++
                    }
                });
            }
        }).flat().filter((val) => { return val !== undefined; });

        return new Answer(answer, "free_response");
    }



    function multipleChoiceAnswerFrom(question) {
        const answer = Object.values(question.widgets).map((widget) => {
            if (widget.options?.choices) {
                return widget.options.choices.map(choice => {
                    if (choice.correct) {

                        var parNumCurAns = "parNum" + curAns
                        var createPar = document.createElement('section')
                        createPar.innerHTML = choice.content
                        document.getElementById('ansBreak').append(createPar)

                        curAns++

                    }
                });
            }
        }).flat().filter((val) => { return val !== undefined; });

        return new Answer(answer, "multiple_choice");
    }

    function expressionAnswerFrom(question) {
        const answer = Object.values(question.widgets).map((widget) => {
            if (widget.options?.answerForms) {
                return widget.options.answerForms.map(answer => {
                    if (Object.values(answer).includes("correct")) {

                        var parNumCurAns = "parNum" + curAns
                        var createPar = document.createElement('section')
                        createPar.innerHTML = answer.value
                        document.getElementById('ansBreak').append(createPar)

                        curAns++

                    }
                });
            }
        }).flat();

        return new Answer(answer, "expression");
    }

    function dropdownAnswerFrom(question) {
        const answer = Object.values(question.widgets).map((widget) => {
            if (widget.options?.choices) {
                return widget.options.choices.map(choice => {
                    if (choice.correct) {

                        var parNumCurAns = "parNum" + curAns
                        var createPar = document.createElement('section')
                        createPar.innerHTML = choice.content
                        document.getElementById('ansBreak').append(createPar)

                        curAns++
                    }
                });
            }
        }).flat();

        return new Answer(answer, "dropdown");
    }
})();