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script.js
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script.js
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var qa, category, diff;
const getQA = async (amount, category, difficulty) => {
let response = await fetch(`https://opentdb.com/api.php?amount=${amount}&category=${category}&difficulty=${difficulty}&type=multiple`)
let result = await response.json()
const {results: questions} = result
let fil = []
questions.map((element) => {
element.incorrect_answers.splice(
Math.floor(Math.random() * (0 - 4) + 4), 0,
element.correct_answer
)
fil.push({
"question": element.question,
"options": element.incorrect_answers,
"ans": element.correct_answer
})
})
qa = fil
// populate quiz carousel
$("#main-container").empty()
$("#main-container").append(quizCarousel(carouselItem(fil), category))
$(".carousel-item").eq(0).addClass("active")
}
const quizForm = `<div class="container-fluid bg-light rounded-3 px-5 py-5 d-flex justify-content-center align-self-center">
<form id="quiz-form" class="w-100">
<div class="form-floating mb-3">
<select name="category" id="difficulty-dropdown" class="form-select fw-bold text-uppercase" required>
<option selected disabled value="">SELECT DIFFICULTY</option>
</select>
<label for="difficulty-dropdown">Difficulty</label>
</div>
<div class="form-floating mb-3">
<select name="category" id="category-dropdown" class="form-select fw-bold text-uppercase" required>
<option selected disabled value="">SELECT A CATEGORY</option>
</select>
<label for="category-dropdown">Category</label>
</div>
<div class="form-floating mb-3">
<select name="que-timing" id="que-timing-dropdown" class="form-select fw-bold text-uppercase" required>
<option selected disabled value="">SELECT NUMBER OF QUESTIONS</option>
</select>
<label for="que-timing-dropdown">Number of Questions</label>
</div>
<div class="row" id="custom-options">
</div>
<div class="col-auto">
<button type="submit" id="submit-btn" class="btn btn-primary mt-4 btn-lg w-100 p-3 fs-3" disabled>
<!-- <span class="spinner-border spinner-border-sm" role="status" aria-hidden="true" style="width: 3rem; height: 3rem; border-width: .4rem;"></span></button> -->
START QUIZ
</div>
</form>
</div>`
const quizCarousel = (carouselItems) => `<div class="container-fluid bg-light rounded-3 p-3 d-flex justify-content-center align-self-center">
<div class="container-fluid w-100 p-0">
<div class="d-flex justify-content-between fw-bold">
<!-- score -->
<div class="d-flex flex-row justify-content-between align-items-center" id="score">
Score:
<div id="currentScore" class="d-inline">0</div>/
<div id="totalScore" class="d-inline">${queNumbers}</div>
</div>
<div id="queNo" class="text-capitalize">
<!--<div id="currentQue" class="d-inline">1</div>/<div id="totalQue" class="d-inline">${queNumbers}</div>-->
${category} · ${diff}
</div>
<!-- close btn -->
<div id="quiz-cls-btn" style="cursor: pointer">
<svg xmlns="http://www.w3.org/2000/svg" width="25" height="25" fill="currentColor" class="bi bi-x-lg" viewBox="0 0 16 16">
<path fill-rule="evenodd" clip-rule="evenodd" d="M13.854 2.146a.5.5 0 0 1 0 .708l-11 11a.5.5 0 0 1-.708-.708l11-11a.5.5 0 0 1 .708 0Z" fill="#000"/>
<path fill-rule="evenodd" clip-rule="evenodd" d="M2.146 2.146a.5.5 0 0 0 0 .708l11 11a.5.5 0 0 0 .708-.708l-11-11a.5.5 0 0 0-.708 0Z" fill="#000"/>
</svg>
</div>
<script>
$("#quiz-cls-btn").click(() => {
console.log($("[data-attempted=true]").length, queNumbers)
if ($("[data-attempted = true]").length < queNumbers) {
let cancelQuiz = confirm("Quiz is not complete! Are you sure you want quit?")
if (cancelQuiz) {
window.location = "/WDW_Project_CE208_CE069_CE114/"
}
} else {
window.location = "/WDW_Project_CE208_CE069_CE114/"
}
})
</script>
</div>
<div class="row">
<div class="col">
<div id="quizCarousel" class="carousel carousel-dark slide w-100" data-interval="false">
<div class="carousel-inner">
${carouselItems}
</div>
<!-- previous btn -->
<button class="carousel-control-prev" id="prev-btn" style="width: auto;" type="button" data-bs-target="#quizCarousel" data-bs-slide="prev">
<span class="carousel-control-prev-icon" aria-hidden="true"></span>
<span class="visually-hidden">Previous</span>
</button>
<script>
$("#next-btn").click(() => {
if (Number($("#currentQue").text()) == Number($("#totalQue").text())) {
$("#currentQue").text(1)
} else {
$("#currentQue").text(Number($("#currentQue").text())+1)
}
})
$("#prev-btn").click(() => {
if (Number($("#currentQue").text()) === 1) {
$("#currentQue").text($("#totalQue").text())
} else {
$("#currentQue").text(Number($("#currentQue").text())-1)
}
})
</script>
<!-- next btn -->
<button class="carousel-control-next" id="next-btn" style="width: auto;" type="button" data-bs-target="#quizCarousel" data-bs-slide="next">
<span class="carousel-control-next-icon" aria-hidden="true"></span>
<span class="visually-hidden">Next</span>
</button>
</div>
</div>
</div>
<div id="result" class="text-center mb-2"></div>
</div>
</div>
<script>$('.carousel').carousel('pause');</script>`
// returns slide of quiz carousel
function carouselItem(qrr) {
let items = ''
qrr.forEach((element, index) => {
items += `<div class="carousel-item px-5"> <!--active-->
<div class="que p-5">
<div class="col text-center fs-6 mb-1 fw-bold">${index+1}/${qrr.length}</div>
<div class="row mb-5">
<div class="col text-start fw-bold fs-5" id="q${index}" data-attempted="false">
${element.question}
</div>
</div>
<div class="row">
<label class="col mx-2 my-2 rounded-3 form-check-label w-75" style="background-color: #dee2e6;" for="q${index}o1" >
<div class="form-check p-2 ms-4">
<input class="form-check-input" name="q${index}" type="radio" onclick="checkAns(${index}, '${element.options[0]}', 1)" id="q${index}o1" value="${element.options[0]}">
<div class="text-start ms-2">${element.options[0]}</div>
</div>
</label>
<label class="col mx-2 my-2 rounded-3 form-check-label w-75" style="background-color: #dee2e6;" for="q${index}o2">
<div class="form-check p-2 ms-4">
<input class="form-check-input" type="radio" onclick="checkAns(${index}, '${element.options[1]}', 2)" name="q${index}" id="q${index}o2" value="${element.options[1]}" data-que-no=${index}>
<div class="text-start ms-2">${element.options[1]}</div>
</div>
</label>
</div>
<div class="row">
<label class="col mx-2 my-2 rounded-3 form-check-label w-75" style="background-color: #dee2e6;" for="q${index}o3">
<div class="form-check p-2 ms-4">
<input class="form-check-input" type="radio" onclick="checkAns(${index}, '${element.options[2]}', 3)" name="q${index}" id="q${index}o3" value="${element.options[2]}" data-que-no=${index}>
<div class="text-start ms-2">${element.options[2]}</div>
</div>
</label>
<label class="col mx-2 my-2 rounded-3 form-check-label w-75" style="background-color: #dee2e6;" for="q${index}o4">
<div class="form-check p-2 ms-4">
<input class="form-check-input" type="radio" onclick="checkAns(${index}, '${element.options[3]}', 4)" name="q${index}" id="q${index}o4" value="${element.options[3]}" data-que-no=${index}>
<div class="text-start ms-2">${element.options[3]}</div>
</div>
</label>
</div>
</div>
</div>`
})
return items
}
// populate quiz form on load
$("#main-container").append(quizForm)
const metadata =
{
"difficulties": ["easy", "medium", "hard"],
"durations": [
{questions: "10", timing: null},
{questions: "15", timing: null},
{questions: "20", timing: null},
{questions: "30", timing: null},
{questions: "40", timing: null},
{questions: "50", timing: null},
],
"categories": [
{"no": "any", "name": "Random"},
{"no": 9, "name": "General Knowledge"},
{"no": 10, "name": "Books"},
{"no": 11, "name": "Film"},
{"no": 12, "name": "Music"},
{"no": 13, "name": "Musicals & Theatres"},
{"no": 14, "name": "Television"},
{"no": 15, "name": "Video Games"},
{"no": 16, "name": "Board Games"},
{"no": 17, "name": "Science & Nature"},
{"no": 18, "name": "Computers"},
{"no": 19, "name": "Mathematics"},
{"no": 20, "name": "Mythology"},
{"no": 21, "name": "Sports"},
{"no": 22, "name": "Geography"},
{"no": 23, "name": "History"},
{"no": 24, "name": "Politics"},
{"no": 25, "name": "Art"},
{"no": 26, "name": "Celebrities"},
{"no": 27, "name": "Animals"},
{"no": 28, "name": "Vehicles"},
{"no": 29, "name": "Comics"},
{"no": 30, "name": "Gadgets"},
{"no": 31, "name": "Anime & Manga"},
{"no": 32, "name": "Cartoon & Animations"}
]
}
const {categories, difficulties, durations} = metadata;
// populate difficulty dropdown
difficulties.forEach(difficulty => {
$("#difficulty-dropdown").append(`<option value="${difficulty}">${difficulty}</option>`)
})
// populate category dropdown
categories.forEach(category => {
$("#category-dropdown").append(`<option value="${category.no}">${category.name}</option>`)
})
// populate que-timing dropdown
durations.forEach(duration => {
if (typeof duration.questions == "number") {
$("#que-timing-dropdown").append(`<option value="${duration.questions}">${duration.questions} Questions / ${duration.timing} Minutes</option>`)
} else {
$("#que-timing-dropdown").append(`<option value="${duration.questions}">${duration.questions}</option>`)
}
})
$("#que-timing-dropdown").on("change", () => {
const customElements =`<div class="col mb-2">
<div class="form-floating fw-bold">
<input type="number" class="form-control fw-bold" id="custom-ques" placeholder="No. of Questions" min=1 max=50 step=1 required>
<label for="custom-ques" class="fw-normal">Number of Questions</label>
</div>
</div>
<div class="col">
<div class="form-floating">
<input type="number" class="form-control fw-bold" id="custom-time" placeholder="Minutes per Question" min=0 step=1>
<label for="custom-time" class="fw-normal">Minutes per Question</label>
</div>
</div>`
$("#que-timing-dropdown").val().toLowerCase() === "custom"
? $("#custom-options").append(customElements)
: $("#custom-options").html("")
})
$("#quiz-form").on("change", () => {
if ($("#difficulty-dropdown").val() != null && $("#category-dropdown").val() != null && $("#que-timing-dropdown").val() != null) {
$("#submit-btn").prop("disabled", false)
} else {
$("#submit-btn").prop("disabled", true)
}
})
let queNumbers;
$("#que-timing-dropdown").on("change", () => queNumbers = $("#que-timing-dropdown").val())
// prevent default submit behaviour
$("#quiz-form").on("submit", (e) => {
e.preventDefault()
// show loader while quiz is being fetched
$("#submit-btn").html(`<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true" style="width: 3rem; height: 3rem; border-width: .4rem;"></span>`)
// disable quiz form inputs
$("#submit-btn").prop("disabled", true)
$("#quiz-form select").prop("disabled", true)
// initiate quiz
category = $("#category-dropdown option:selected").text()
diff = $("#difficulty-dropdown option:selected").text()
getQA($("#que-timing-dropdown").val(), $("#category-dropdown").val(), $("#difficulty-dropdown").val())
})
// check answer of current question and response accordingly
const checkAns = (index, option, optionNo) => {
if (option == qa[index].ans){
$(`input[id="q${index}o${optionNo}"]`).parents().find(`label[for="q${index}o${optionNo}"]`).addClass("bg-success text-light fw-bold")
$("#currentScore").text(Number($("#currentScore").text())+1)
} else {
$(`input[id="q${index}o${optionNo}"]`).parents().find(`label[for="q${index}o${optionNo}"]`).addClass("bg-danger text-light fw-bold")
}
// mark current question as attempted
$(`#q${index}`).attr("data-attempted", true) // prop didn't work
// disable current question
$(`input[name=q${index}]`).attr("disabled", true)
// check if all questions are attempted
if ($("div[data-attempted=true]").length === Number($("#totalScore").text())) {
$("#result").html(`
<span class="badge bg-success fs-4">YOU SCORED ${$("#currentScore").text()} OUT OF ${$("#totalScore").text()}</span>
`)
}
}