Quiz

<div class="quiz__wrap">
    <div class="quiz">
        <h2 class="quiz__type"></h2>
        <h3 class="quiz__question">
            <span class="quiz__number"></span>
            <span class="quiz__ask"></span>
        </h3>
        <div class="quiz__view">
            <div class="true">정답입니다!</div>
            <div class="false">틀렸습니다!</div>
            <div class="dog">
                <div class="head">
                    <div class="ears"></div>
                    <div class="face"></div>
                    <div class="eyes">
                        <div class="teardrop"></div>
                    </div>
                    <div class="nose"></div>
                    <div class="mouth">
                        <div class="tongue"></div>
                    </div>
                    <div class="chin"></div>
                </div>
                <div class="body">
                    <div class="tail"></div>
                    <div class="legs"></div>
                </div>
            </div>
        </div>
        <div class="quiz__answer">
            <input class="quiz__input" type="text" placeholder="정답을 적어주세요!">
            <button class="quiz__confirm">정답 확인하기</button>
            <div class="quiz__result"></div>
        </div>
    </div>
    <div class="quiz">
            <h2 class="quiz__type"></h2>
            <h3 class="quiz__question">
                <span class="quiz__number"></span>
                <span class="quiz__ask"></span>
            </h3>
            <div class="quiz__view">
                <div class="true">정답입니다!</div>
                <div class="false">틀렸습니다!</div>
                <div class="dog">
                    <div class="head">
                        <div class="ears"></div>
                        <div class="face"></div>
                        <div class="eyes">
                            <div class="teardrop"></div>
                        </div>
                        <div class="nose"></div>
                        <div class="mouth">
                            <div class="tongue"></div>
                        </div>
                        <div class="chin"></div>
                    </div>
                    <div class="body">
                        <div class="tail"></div>
                        <div class="legs"></div>
                    </div>
                </div>
            </div>
            <div class="quiz__answer">
                <input class="quiz__input" type="text" placeholder="정답을 적어주세요!">
                <button class="quiz__confirm">정답 확인하기</button>
                <div class="quiz__result"></div>
            </div>
        </div>
    </div>
    <div class="quiz">
            <h2 class="quiz__type"></h2>
            <h3 class="quiz__question">
                <span class="quiz__number"></span>
                <span class="quiz__ask"></span>
            </h3>
            <div class="quiz__view">
                <div class="true">정답입니다!</div>
                <div class="false">틀렸습니다!</div>
                <div class="dog">
                    <div class="head">
                        <div class="ears"></div>
                        <div class="face"></div>
                        <div class="eyes">
                            <div class="teardrop"></div>
                        </div>
                        <div class="nose"></div>
                        <div class="mouth">
                            <div class="tongue"></div>
                        </div>
                        <div class="chin"></div>
                    </div>
                    <div class="body">
                        <div class="tail"></div>
                        <div class="legs"></div>
                    </div>
                </div>
            </div>
            <div class="quiz__answer">
                <input class="quiz__input" type="text" placeholder="정답을 적어주세요!">
                <button class="quiz__confirm">정답 확인하기</button>
                <div class="quiz__result"></div>
            </div>
        </div>
    </div>
</div>

.quiz__wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 150px;
}
.quiz {
    max-width: 500px;
    width: 100%;
    background: #fff;
    border: 8px ridge #cacaca;
    margin: 10px;
}
.quiz__type {
    background: #cacaca;
    text-align: center;
    font-size: 14px;
    color: #3b3b3b;
    border: 3px ridge #cacaca;
    padding: 3px 0;
    position: relative;
}
.quiz__type::before {
    content: '';
    position: absolute;
    left: 2px;
    top: 2px;
    width: 15px;
    height: 15px;
    border: 6px ridge #cacaca;
}
.quiz__type::after {
    content: '';
    position: absolute;
    right: 2px;
    top: 2px;
    width: 15px;
    height: 15px;
    border: 6px ridge #cacaca;
}
.quiz__question {
    border-top: 6px ridge #cacaca;
    border-bottom: 6px ridge #cacaca;
    padding: 13px 30px;
    font-size: 24px;
    line-height: 1.4; 
}
.quiz__number {
    font-family: 'Cafe24Dangdanghae';
    color: #64a30b;
}
.quiz__ask {
    font-family: 'Cafe24Dangdanghae';
}
.quiz__view {
    background-color: #f5f5f5;
    position: relative;
}
.quiz__view .true {
    position: absolute;
    left: 70%;
    top: 100px;
    width: 120px; 
    height: 120px;
    border-radius: 50%;
    z-index: 100;
    line-height: 120px;
    text-align: center;
    color: #fff;
    background-color: #F5534F;
    opacity: 0;
}
.quiz__view .false {
    position: absolute;
    right: 70%;
    top: 100px;
    width: 120px; 
    height: 120px;
    background: #fff;
    border-radius: 50%;
    z-index: 100;
    line-height: 120px;
    text-align: center;
    color: #F5534F;
    opacity: 0;
}
.quiz__view.like .true {
    opacity: 1;
    animation: wobble 0.6s;
}
.quiz__view.dislike .false {
    opacity: 1;
    animation: wobble 0.6s;
}
@keyframes wobble {
    0%   {transform: translateZ(0)}
    15%  {transform: translate3d(-25%, 0, 0) rotate(-5deg)}
    30%  {transform: translate3d(20%, 0, 0) rotate(3deg)}
    45%  {transform: translate3d(-15%, 0, 0) rotate(-3deg)}
    60%  {transform: translate3d(10%, 0, 0) rotate(2deg)}
    75%  {transform: translate3d(-5%, 0, 0) rotate(-1deg)}
    100% {transform: translateZ(0)}
}
.quiz__answer {
    background-color: #f5f5f5;
    border-top: 6px ridge #cacaca;
    padding: 10px;
}
.quiz__confirm {
    border: 6px ridge #cacaca;
    width: 100%;
    font-size: 22px;
    padding: 13px 20px;
    background: #d6d6d6;
    font-family: 'Cafe24Dangdanghae';
    text-shadow: 1px 1px 1px #fff;
    transition: all 0.3s;
    cursor: pointer;
}
.quiz__confirm:hover {
    background: #b3b3b3;
}
.quiz__result {
    text-align: center;
    border: 6px ridge #cacaca;
    width: 100%;
    font-size: 22px;
    padding: 13px 20px;
    background: #fff;
    font-family: 'Cafe24Dangdanghae';
    text-shadow: 1px 1px 1px #fff;
    /* display: none; */
}
.quiz__input {
    width: 100%;
    border: 6px ridge #cacaca;
    font-size: 22px;
    padding: 13px 20px;
    background: #fff;
    font-family: 'Cafe24Dangdanghae';
    text-shadow: 1px 1px 1px #fff;
    margin-bottom: 10px;
}

const quiz = document.querySelectorAll(".quiz");
const quizType = document.querySelectorAll(".quiz__type"); //문제 유형
const quizNumber = document.querySelectorAll(".quiz__number"); //문제 번호
const quizAsk = document.querySelectorAll(".quiz__ask"); //문제 질문
const quizConfirm = document.querySelectorAll(".quiz__confirm"); //문제 정답 버튼
const quizResult = document.querySelectorAll(".quiz__result"); //문제 정답
const quizView = document.querySelectorAll(".quiz__view") //문제 화면
const quizInput = document.querySelectorAll(".quiz__input"); //사용자정답

//문제 정보를 배열객체로 저장.
const quizInfo = [{
        answerType: "javascript",
        answerNum: 1,
        answerAsk: "객체 기반의 스크립트 프로그래밍 언어는 무엇입니까?",
        answerResult: "javascript"
    },
    {
        answerType: "html",
        answerNum: 2,
        answerAsk: "웹 페이지를 다른 페이지로 연결하는 링크는 무엇입니까?",
        answerResult: "hypertext"
    },
    {
        answerType: "css",
        answerNum: 3,
        answerAsk: "모든 형태의 모든 요소를 선택하는 선택자는?",
        answerResult: "*"
    }
];

//배열로 저장된 문제 정보들을 브라우저에 출력한다.
quizInfo.forEach((e, i) => {    //배열 요소(e), 배열 인덱스(i)
    quizType[i].textContent = quizInfo[i].answerType;   //i번째 quiz박스에 i번째 배열 요소의 answerType 입력
    quizNumber[i].textContent = quizInfo[i].answerNum + ". ";  //i번째 quiz박스에 i번째 배열 요소의 answerNum 입력
    quizAsk[i].textContent = quizInfo[i].answerAsk;         //i번째 quiz박스에 i번째 배열 요소의 answerAsk 입력
    quizResult[i].textContent = "정답은 " + quizInfo[i].answerResult + "입니다."; //i번째 quiz박스에 i번째 배열 요소의 answerResult 입력
})

//정답 숨기기, 모든 정답은 일단 숨긴다.
quizResult.forEach(el => {
    el.style.display = "none";
})

//정답 확인
quizConfirm.forEach((e, num) => {   //모든 확인 버튼을 읽어온다.
    e.addEventListener("click", () => {     //확인 버튼 클릭 시

        //사용자 정답 = quizInfo 정답
        const userWord = quizInput[num].value.toLowerCase().trim();     //input박스로 읽어온 사용자 답안을 모두 소문자로,공백문자제거
        if (userWord == quizInfo[num].answerResult) {       //답안과 정답이 같으면
            quizView[num].classList.add("like");        //강아지 like애니메이션
            quizConfirm[num].style.display = "none";    //확인 버튼 사라짐
        } else {    //답안과 정답이 다르면
            quizView[num].classList.add("dislike");     //강아지dislie애니메이션
            quizInput[num].style.display = "none";      //input박스 사라짐
            quizResult[num].style.display = "block";    //정답 박스 나타남
            quizConfirm[num].style.display = "none";    //확인 버튼 사라짐
        }
    })
})