TestMe/index.html at master · epikkoder/TestMe · GitHub

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<!doctype html>
<html lang="en">

<head>
    <title>TestMe</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm"
        crossorigin="anonymous">

    <style>
        body {
            background-color: darkgray;
        }

        .container div {
            margin: 10px 0 10px 0;
        }

        #question {
            background-color: rgb(233, 233, 233);
            border-radius: 5px;
            font-weight: bold;
        }

        #answer {
            background-color: lightyellow;
            display: none;
            border-radius: 5px;
        }
    </style>
</head>

<body>
    <div class="container">
        <div class="col-sm-12" id="question"></div>
        <div class="col-sm-12">
            <button type="button" class="btn btn-info" id="displayAnswerBtn">Show Answer</button>
        </div>
        <div class="col-sm-12" id="answer"></div>
        <div class="col-sm-12">
            <button type="button" class="btn btn-primary" id="random">
                Get random question/answer
            </button>
        </div>
    </div>

    <script type="text/javascript" src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
        crossorigin="anonymous"></script>

    <script>
        let questionnaire = [];
        let item = {};
        const question = document.querySelector("#question");
        const answer = document.querySelector("#answer");
        const showAnswerBtn = document.querySelector("#displayAnswerBtn");
        const randomBtn = document.querySelector("#random");
        const questionnaireUrl = 'questionnaire.json';

        const fetchFile = file => fetch(file)
            .then(blob => blob.json()); // This one returns a Promise, it happens asynchronously, so you have to do what you want in the then()

        const initData = (questionnaireUrl) => fetchFile(questionnaireUrl)
            .then(data => {
                questionnaire = data;
            })

        const displayQuestionnaireItem = () => {
            getRandomQuestionnaireItem();
            question.innerHTML = item.question;
            answer.innerHTML = item.answer;
            hideAnswer();
            displayShowAnswerBtn();
        }

        const hideAnswer = () => {
            answer.style.display = 'none';
        }

        const displayAnswer = () => {
            answer.style.display = 'block';
            hideShowAnswerBtn();
        }

        const hideShowAnswerBtn = () => {
            showAnswerBtn.style.display = 'none';
        }

        const displayShowAnswerBtn = () => {
            showAnswerBtn.style.display = 'block';
        }

        const getRandomQuestionnaireItem = () => {
            item = questionnaire[Math.floor(Math.random() * questionnaire.length)];
        }

        const initDisplay = () => {
            showAnswerBtn.addEventListener("click", displayAnswer);
            randomBtn.addEventListener("click", displayQuestionnaireItem);
        }

        initData(questionnaireUrl)
            .then(displayQuestionnaireItem)
            .then(initDisplay);
    </script>
</body>

</html>