How to make a random quiz with no repeated questions

An Easier Way

In this lesson, you will learn how to make a 10-question random quiz, but this time, the questions will not repeat while you take the quiz.

The quiz is based on a method where the computer chooses one question from each set of the 10 sets. There are 3 questions in each set. Therefore, the players will only be playing 10 random questions at a time (not repeated). But if they repeat the quiz, the computer will show either same or different questions. If you want to keep the code as it is but want to change the questions, all you have to do is look for the questions that have equations, such as "What is 1+1?". Also change the answers of that same question. I highlighted what needs to be changed in the first question so you can have an idea. Then you can do the same thing with the rest. Remember, when you see "q001" or "q002", these are the correct and incorrect answers. All odd numbers (q001, q003, q011) is for correct answers, and all even numbers (q002, 004, q020) are for incorrect. But do not change them. Only change the answer that is written inside of "> <" tags.

Code:
_______________________________________________________________
<!DOCTYPE html>

<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="utf-8" />
    <title>Random Questions</title>
</head>
<body>
    <style>
        #frame001 {
            background-color: white;
            border: 2px solid black;
            width: 500px;
            height: 400px;
        }

        .blue001 {
            background-color: dodgerblue;
            border: none;
            color: white;
            padding: 7px 17px;
            text-align: center;
            text-decoration: none;
            display: inline-block;
            font-size: 16px;
            margin: 6px 2px;
            border-radius: 9px;
            cursor: pointer;
            width: 120px;
        }

        .blue002 {
            background-color: blue;
            border: none;
            color: white;
            padding: 7px 17px;
            text-align: center;
            text-decoration: none;
            display: inline-block;
            font-size: 16px;
            margin: 2px 2px;
            border-radius: 9px;
            cursor: pointer;
            width: 120px;
        }

        #center001 {
            text-align: center;
        }

        #font001 {
            font-size: large;
            color: black;
        }
    </style>
    <div id="frame001">
        <div id="font001">
            <div id="center001">
                <h2>Random Questions</h2>
                Question: <text id="question001">0</text><br />
                Score: <text id="score001">0</text>
                <hr />
                <div id="disappear001">
                    <p>Click Begin to start the quiz.</p>
                    <button class="blue002" onclick="begin001()">Begin</button>
                </div>
                <p id="message001"></p>
                <p id="message002"></p>
                <p id="message003"></p>
            </div>
        </div>
    </div>
    <script>
        var shuffle001 = Math.floor(Math.random() * 10);
        var a = ["What is 1 + 1?<br /><br /><button class=blue001 onclick=q002()>1</button><br /><button class=blue001 onclick=q001()>2</button><br /><button class=blue001 onclick=q002()>3</button><br />",
                 "What is 2 + 2?<br /><br /><button class=blue001 onclick=q001()>4</button><br /><button class=blue001 onclick=q002()>5</button><br /><button class=blue001 onclick=q002()>7</button><br />",
                 "What is 3 + 3?<br /><br /><button class=blue001 onclick=q002()>8</button><br /><button class=blue001 onclick=q002()>3</button><br /><button class=blue001 onclick=q001()>6</button><br />"];

        var b = ["What is 4 + 4?<br /><br /><button class=blue001 onclick=q003()>8</button><br /><button class=blue001 onclick=q004()>12</button><br /><button class=blue001 onclick=q004()>13</button><br />",
                 "What is 5 + 5?<br /><br /><button class=blue001 onclick=q004()>11</button><br /><button class=blue001 onclick=q003()>10</button><br /><button class=blue001 onclick=q004()>15</button><br />",
                 "What is 6 + 6?<br /><br /><button class=blue001 onclick=q004()>11</button><br /><button class=blue001 onclick=q003()>12</button><br /><button class=blue001 onclick=q004()>15</button><br />"];

        var c = ["What is 7 + 7?<br /><br /><button class=blue001 onclick=q005()>14</button><br /><button class=blue001 onclick=q006()>10</button><br /><button class=blue001 onclick=q006()>15</button><br />",
                 "What is 8 + 8?<br /><br /><button class=blue001 onclick=q006()>11</button><br /><button class=blue001 onclick=q006()>10</button><br /><button class=blue001 onclick=q005()>16</button><br />",
                 "What is 9 + 9?<br /><br /><button class=blue001 onclick=q005()>18</button><br /><button class=blue001 onclick=q006()>10</button><br /><button class=blue001 onclick=q006()>15</button><br />"];

        var h = ["What is 10 + 10?<br /><br /><button class=blue001 onclick=q007()>20</button><br /><button class=blue001 onclick=q008()>12</button><br /><button class=blue001 onclick=q008()>15</button><br />",
                 "What is 11 + 11?<br /><br /><button class=blue001 onclick=q007()>22</button><br /><button class=blue001 onclick=q008()>10</button><br /><button class=blue001 onclick=q008()>16</button><br />",
                 "What is 12 + 12?<br /><br /><button class=blue001 onclick=q007()>24</button><br /><button class=blue001 onclick=q008()>10</button><br /><button class=blue001 onclick=q008()>15</button><br />"];

        var i = ["What is 13 + 13?<br /><br /><button class=blue001 onclick=q010()>1</button><br /><button class=blue001 onclick=q009()>26</button><br /><button class=blue001 onclick=q010()>3</button><br />",
                 "What is 14 + 14?<br /><br /><button class=blue001 onclick=q009()>28</button><br /><button class=blue001 onclick=q010()>5</button><br /><button class=blue001 onclick=q010()>7</button><br />",
                 "What is 15 + 15?<br /><br /><button class=blue001 onclick=q010()>8</button><br /><button class=blue001 onclick=q010()>3</button><br /><button class=blue001 onclick=q009()>30</button><br />"];

        var j = ["What is 16 + 16?<br /><br /><button class=blue001 onclick=q011()>32</button><br /><button class=blue001 onclick=q012()>12</button><br /><button class=blue001 onclick=q012()>13</button><br />",
                 "What is 17 + 17?<br /><br /><button class=blue001 onclick=q012()>11</button><br /><button class=blue001 onclick=q011()>34</button><br /><button class=blue001 onclick=q012()>15</button><br />",
                 "What is 18 + 18?<br /><br /><button class=blue001 onclick=q012()>11</button><br /><button class=blue001 onclick=q012()>12</button><br /><button class=blue001 onclick=q011()>36</button><br />"];

        var k = ["What is 19 + 19?<br /><br /><button class=blue001 onclick=q013()>38</button><br /><button class=blue001 onclick=q014()>10</button><br /><button class=blue001 onclick=q014()>15</button><br />",
                 "What is 20 + 20?<br /><br /><button class=blue001 onclick=q014()>11</button><br /><button class=blue001 onclick=q013()>40</button><br /><button class=blue001 onclick=q014()>16</button><br />",
                 "What is 21 + 21?<br /><br /><button class=blue001 onclick=q014()>18</button><br /><button class=blue001 onclick=q014()>10</button><br /><button class=blue001 onclick=q013()>42</button><br />"];

        var l = ["What is 22 + 22?<br /><br /><button class=blue001 onclick=q015()>44</button><br /><button class=blue001 onclick=q016()>12</button><br /><button class=blue001 onclick=q016()>15</button><br />",
                 "What is 23 + 23?<br /><br /><button class=blue001 onclick=q016()>22</button><br /><button class=blue001 onclick=q015()>46</button><br /><button class=blue001 onclick=q016()>16</button><br />",
                 "What is 24 + 24?<br /><br /><button class=blue001 onclick=q016()>24</button><br /><button class=blue001 onclick=q016()>10</button><br /><button class=blue001 onclick=q015()>48</button><br />"];

        var m = ["What is 25 + 25?<br /><br /><button class=blue001 onclick=q017()>50</button><br /><button class=blue001 onclick=q018()>10</button><br /><button class=blue001 onclick=q018()>15</button><br />",
                 "What is 26 + 26?<br /><br /><button class=blue001 onclick=q018()>11</button><br /><button class=blue001 onclick=q017()>52</button><br /><button class=blue001 onclick=q018()>16</button><br />",
                 "What is 27 + 27?<br /><br /><button class=blue001 onclick=q018()>18</button><br /><button class=blue001 onclick=q018()>10</button><br /><button class=blue001 onclick=q017()>54</button><br />"];

        var n = ["What is 28 + 28?<br /><br /><button class=blue001 onclick=q019()>56</button><br /><button class=blue001 onclick=q020()>12</button><br /><button class=blue001 onclick=q020()>15</button><br />",
                 "What is 29 + 29?<br /><br /><button class=blue001 onclick=q020()>22</button><br /><button class=blue001 onclick=q019()>58</button><br /><button class=blue001 onclick=q020()>16</button><br />",
                 "What is 30 + 30?<br /><br /><button class=blue001 onclick=q020()>24</button><br /><button class=blue001 onclick=q020()>10</button><br /><button class=blue001 onclick=q019()>60</button><br />"];

        var random001 = Math.floor(Math.random() * a.length);
        var random002 = Math.floor(Math.random() * b.length);
        var random003 = Math.floor(Math.random() * c.length);
        var random004 = Math.floor(Math.random() * h.length);
        var random005 = Math.floor(Math.random() * i.length);
        var random006 = Math.floor(Math.random() * j.length);
        var random007 = Math.floor(Math.random() * k.length);
        var random008 = Math.floor(Math.random() * l.length);
        var random009 = Math.floor(Math.random() * m.length);
        var random010 = Math.floor(Math.random() * n.length);

        var d = ["Correct"];
        var e = ["Incorrect"];

        var f = 0;
        f++;
        var g = 0;
        g++;

        function begin001() {
            question001.innerHTML = f++;
            disappear001.innerHTML = "";
            if (shuffle001 == "0") {
                message001.innerHTML = a[random001];

            } else if (shuffle001 == "1") {
                message001.innerHTML = b[random002];

            } else if (shuffle001 == "2") {
                message001.innerHTML = c[random003];

            } else if (shuffle001 == "3") {
                message001.innerHTML = h[random004];

            } else if (shuffle001 == "4") {
                message001.innerHTML = i[random005];

            } else if (shuffle001 == "5") {
                message001.innerHTML = j[random006];

            } else if (shuffle001 == "6") {
                message001.innerHTML = k[random007];

            } else if (shuffle001 == "7") {
                message001.innerHTML = l[random008];

            } else if (shuffle001 == "8") {
                message001.innerHTML = m[random009];

            }
            else {
                message001.innerHTML = n[random010];
            }
        }

        function q001() {
            score001.innerHTML = g++;
            message001.innerHTML = "";
            message002.innerHTML = d;
            message003.innerHTML = "<button class=blue002 onclick=next001()>Next</button>";
        }

        function q002() {
            message001.innerHTML = "";
            message002.innerHTML = e;
            message003.innerHTML = "<button class=blue002 onclick=next001()>Next</button>";
        }

        function next001() {
            random002 = Math.floor(Math.random() * b.length);
            if (f > 10) {
                message001.innerHTML = "End of Quiz.";
                message002.innerHTML = "";
                message003.innerHTML = "";
            } else {
                message001.innerHTML = b[random002];
                question001.innerHTML = f++;
                message002.innerHTML = "";
                message003.innerHTML = "";
            }
        }

        function q003() {
            score001.innerHTML = g++;
            message001.innerHTML = "";
            message002.innerHTML = d;
            message003.innerHTML = "<button class=blue002 onclick=next002()>Next</button>";
        }

        function q004() {
            message001.innerHTML = "";
            message002.innerHTML = e;
            message003.innerHTML = "<button class=blue002 onclick=next002()>Next</button>";
        }

        function next002() {
            random003 = Math.floor(Math.random() * c.length);
            if (f > 10) {
                message001.innerHTML = "End of Quiz.";
                message002.innerHTML = "";
                message003.innerHTML = "";
            } else {
                message001.innerHTML = c[random003];
                question001.innerHTML = f++;
                message002.innerHTML = "";
                message003.innerHTML = "";
            }
        }

        function q005() {
            score001.innerHTML = g++;
            message001.innerHTML = "";
            message002.innerHTML = d;
            message003.innerHTML = "<button class=blue002 onclick=next003()>Next</button>";
        }

        function q006() {
            message001.innerHTML = "";
            message002.innerHTML = e;
            message003.innerHTML = "<button class=blue002 onclick=next003()>Next</button>";
        }

        function next003() {
            random004 = Math.floor(Math.random() * h.length);
            if (f > 10) {
                message001.innerHTML = "End of Quiz.";
                message002.innerHTML = "";
                message003.innerHTML = "";
            } else {
                message001.innerHTML = h[random004];
                question001.innerHTML = f++;
                message002.innerHTML = "";
                message003.innerHTML = "";
            }
        }

        function q007() {
            score001.innerHTML = g++;
            message001.innerHTML = "";
            message002.innerHTML = d;
            message003.innerHTML = "<button class=blue002 onclick=next004()>Next</button>";
        }

        function q008() {
            message001.innerHTML = "";
            message002.innerHTML = e;
            message003.innerHTML = "<button class=blue002 onclick=next004()>Next</button>";
        }

        function next004() {
            random005 = Math.floor(Math.random() * i.length);
            if (f > 10) {
                message001.innerHTML = "End of Quiz.";
                message002.innerHTML = "";
                message003.innerHTML = "";
            } else {
                message001.innerHTML = i[random005];
                question001.innerHTML = f++;
                message002.innerHTML = "";
                message003.innerHTML = "";
            }
        }

        function q009() {
            score001.innerHTML = g++;
            message001.innerHTML = "";
            message002.innerHTML = d;
            message003.innerHTML = "<button class=blue002 onclick=next005()>Next</button>";
        }

        function q010() {
            message001.innerHTML = "";
            message002.innerHTML = e;
            message003.innerHTML = "<button class=blue002 onclick=next005()>Next</button>";
        }

        function next005() {
            random006 = Math.floor(Math.random() * j.length);
            if (f > 10) {
                message001.innerHTML = "End of Quiz.";
                message002.innerHTML = "";
                message003.innerHTML = "";
            } else {
                message001.innerHTML = j[random006];
                question001.innerHTML = f++;
                message002.innerHTML = "";
                message003.innerHTML = "";
            }
        }

        function q011() {
            score001.innerHTML = g++;
            message001.innerHTML = "";
            message002.innerHTML = d;
            message003.innerHTML = "<button class=blue002 onclick=next006()>Next</button>";
        }

        function q012() {
            message001.innerHTML = "";
            message002.innerHTML = e;
            message003.innerHTML = "<button class=blue002 onclick=next006()>Next</button>";
        }

        function next006() {
            random007 = Math.floor(Math.random() * k.length);
            if (f > 10) {
                message001.innerHTML = "End of Quiz.";
                message002.innerHTML = "";
                message003.innerHTML = "";
            } else {
                message001.innerHTML = k[random007];
                question001.innerHTML = f++;
                message002.innerHTML = "";
                message003.innerHTML = "";
            }
        }

        function q013() {
            score001.innerHTML = g++;
            message001.innerHTML = "";
            message002.innerHTML = d;
            message003.innerHTML = "<button class=blue002 onclick=next007()>Next</button>";
        }

        function q014() {
            message001.innerHTML = "";
            message002.innerHTML = e;
            message003.innerHTML = "<button class=blue002 onclick=next007()>Next</button>";
        }

        function next007() {
            random008 = Math.floor(Math.random() * l.length);
            if (f > 10) {
                message001.innerHTML = "End of Quiz.";
                message002.innerHTML = "";
                message003.innerHTML = "";
            } else {
                message001.innerHTML = l[random008];
                question001.innerHTML = f++;
                message002.innerHTML = "";
                message003.innerHTML = "";
            }
        }

        function q015() {
            score001.innerHTML = g++;
            message001.innerHTML = "";
            message002.innerHTML = d;
            message003.innerHTML = "<button class=blue002 onclick=next008()>Next</button>";
        }

        function q016() {
            message001.innerHTML = "";
            message002.innerHTML = e;
            message003.innerHTML = "<button class=blue002 onclick=next008()>Next</button>";
        }

        function next008() {
            random009 = Math.floor(Math.random() * m.length);
            if (f > 10) {
                message001.innerHTML = "End of Quiz.";
                message002.innerHTML = "";
                message003.innerHTML = "";
            } else {
                message001.innerHTML = m[random009];
                question001.innerHTML = f++;
                message002.innerHTML = "";
                message003.innerHTML = "";
            }
        }

        function q017() {
            score001.innerHTML = g++;
            message001.innerHTML = "";
            message002.innerHTML = d;
            message003.innerHTML = "<button class=blue002 onclick=next009()>Next</button>";
        }

        function q018() {
            message001.innerHTML = "";
            message002.innerHTML = e;
            message003.innerHTML = "<button class=blue002 onclick=next009()>Next</button>";
        }

        function next009() {
            random010 = Math.floor(Math.random() * n.length);
            if (f > 10) {
                message001.innerHTML = "End of Quiz.";
                message002.innerHTML = "";
                message003.innerHTML = "";
            } else {
                message001.innerHTML = n[random010];
                question001.innerHTML = f++;
                message002.innerHTML = "";
                message003.innerHTML = "";
            }
        }

        function q019() {
            score001.innerHTML = g++;
            message001.innerHTML = "";
            message002.innerHTML = d;
            message003.innerHTML = "<button class=blue002 onclick=next010()>Next</button>";
        }

        function q020() {
            message001.innerHTML = "";
            message002.innerHTML = e;
            message003.innerHTML = "<button class=blue002 onclick=next010()>Next</button>";
        }

        function next010() {
            if (f > 10) {
                message001.innerHTML = "End of Quiz.";
                message002.innerHTML = "";
                message003.innerHTML = "";
            } else {
                message001.innerHTML = a[random001];
                question001.innerHTML = f++;
                message002.innerHTML = "";
                message003.innerHTML = "";
            }
        }
    </script>
</body>
</html>

If you want to watch the video and see how it is done, you can check it out below.

Other Topics:

Islam Facts
Brain Parts
Facts About Europe