정답입니다!
틀렸습니니다!

정답입니다!
틀렸습니니다!

정답입니다!
틀렸습니니다!

정답입니다!
틀렸습니니다!
source view
JAVASCRIPT
HTML
CSS 
//선택자
const quizType = document.querySelectorAll(".quiz__type");               // 퀴즈 종류
const quizNumber = document.querySelectorAll(".quiz__question .number")    // 퀴즈 번호
const quizAsk = document.querySelectorAll(".quiz__question .ask")          // 퀴즈 질문
const quizConfirm = document.querySelectorAll(".quiz__answer .confirm")    // 정답 확인 버튼
const quizResult = document.querySelectorAll(".quiz__answer .result")      // 정답 결과
const quizInput = document.querySelectorAll(".quiz__answer .input")        // 사용자 정답
const quizView = document.querySelectorAll(".quiz__view")


const quizInfo = [{
    answerType: "웹디자인 기능사",
    answerNum: "1.",
    answerAsk: "서로 반대되는 색상을 배색하였을 때 나타나는 느낌은 무엇인가",
    answerResult: "강렬한 느낌"
},
{
    answerType: "웹디자인 기능사",
    answerNum: "2.",
    answerAsk: "HTML 문서의 시작을 알려주는 태그는?",
    answerResult: "<html>"
},
{
    answerType: "웹디자인 기능사",
    answerNum: "3.",
    answerAsk: "다음 중 웹 페이지 제작에 따른 외부 스타일시트 확장자는?",
    answerResult: "css"
},
{
    answerType: "웹디자인 기능사",
    answerNum: "4.",
    answerAsk: "E-mail 송신 시에 사용되는 프로토콜은?",
    answerResult: "SMTP"
}
];

// for (i=0; i<quizInfo.length; i++){
//     quizType[i].textContent = quizInfo[i].answerType;
//     quizNumber[i].textContent = quizInfo[i].answerNum;
//     quizAsk[i].textContent = quizInfo[i].answerAsk;
//     quizResult[i].textContent = quizInfo[i].answerResult;
// }

quizInfo.forEach((e,i) => {
quizType[i].textContent = quizInfo[i].answerType;
quizNumber[i].textContent = quizInfo[i].answerNum;
quizAsk[i].textContent = quizInfo[i].answerAsk;
quizResult[i].textContent = quizInfo[i].answerResult;
});

//정답 숨기기

// quizResult[0].style.display = "none";
// quizResult[1].style.display = "none";
// quizResult[2].style.display = "none";
// quizResult[3].style.display = "none";

// for (let i=0; i<quizResult.length; i++){
//     quizResult[i].style.display = "none";
// }

quizInfo.forEach (function(e,i){
quizResult[i].style.display = "none";
});

// // 문제 출력
// quizType[0].textContent = quizInfo[0].answerType;
// quizType[1].textContent = quizInfo[1].answerType;
// quizType[2].textContent = quizInfo[2].answerType;
// quizType[3].textContent = quizInfo[3].answerType;

// quizNumber[0].textContent = quizInfo[0].answerNum;
// quizNumber[1].textContent = quizInfo[1].answerNum;
// quizNumber[2].textContent = quizInfo[2].answerNum;
// quizNumber[3].textContent = quizInfo[3].answerNum;

// quizAsk[0].textContent = quizInfo[0].answerAsk;
// quizAsk[1].textContent = quizInfo[1].answerAsk;
// quizAsk[2].textContent = quizInfo[2].answerAsk;
// quizAsk[3].textContent = quizInfo[3].answerAsk;

// quizResult[0].textContent = quizInfo[0].answerResult;
// quizResult[1].textContent = quizInfo[1].answerResult;
// quizResult[2].textContent = quizInfo[2].answerResult;
// quizResult[3].textContent = quizInfo[3].answerResult;

//정답 확인
// quizConfirm.addEventListener("click", () => {
//     alet("ddd")
// }); 버튼 4개를 모두 인식하지 못함

quizConfirm.forEach((btn, num) => {
btn.addEventListener("click", ()=> {

    //사용자 정답
    const userWord = quizInput[num].value;

    //사용자 정답 == 문제 정답
    if(userWord == quizInfo[num].answerResult){
        //정답
        // alert("정답")
        quizView[num].classList.add("like");
        quizConfirm[num].style.display = "none";
        quizResult[num].style.display = "block";
        quizInput[num].style.display = "none";
    } else {
        //오답
        // alert("오답")
        quizView[num].classList.add("dislike");
        quizConfirm[num].style.display = "none";
        quizResult[num].style.display = "block";
        quizInput[num].style.display = "none";
    }
})
}); // 버튼 4개가 있다는걸 알려주기위해 forEach문을 통해 btn 개수를 알려주고 그 다음 클릭 이벤트를 실행
                        

<main id="main">
<div class="quiz__wrap">
    <div class="quiz">
        <span class="quiz__type"></span>
        <h2 class="quiz__question">
            <span class="number"></span>
            <div class="ask">
            </div>
        </h2>
        <div class="quiz__view">
            <div class="true">정답입니다!</div>
            <div class="false">틀렸습니니다!</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 type="text" class="input" placeholder="정답을 적어주세요.">
            <button class="confirm">정답 확인하기</button>
            <div class="result"></div>
        </div>
    </div>
    <div class="quiz">
        <span class="quiz__type"></span>
        <h2 class="quiz__question">
            <span class="number"></span>
            <div class="ask">
            </div>
        </h2>
        <div class="quiz__view">
            <div class="true">정답입니다!</div>
            <div class="false">틀렸습니니다!</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 type="text" class="input" placeholder="정답을 적어주세요.">
            <button class="confirm">정답 확인하기</button>
            <div class="result"></div>
        </div>
    </div>
    <div class="quiz">
        <span class="quiz__type"></span>
        <h2 class="quiz__question">
            <span class="number"></span>
            <div class="ask">
            </div>
        </h2>
        <div class="quiz__view">
            <div class="true">정답입니다!</div>
            <div class="false">틀렸습니니다!</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 type="text" class="input" placeholder="정답을 적어주세요.">
            <button class="confirm">정답 확인하기</button>
            <div class="result"></div>
        </div>
    </div>
    <div class="quiz">
        <span class="quiz__type"></span>
        <h2 class="quiz__question">
            <span class="number"></span>
            <div class="ask">
            </div>
        </h2>
        <div class="quiz__view">
            <div class="true">정답입니다!</div>
            <div class="false">틀렸습니니다!</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 type="text" class="input" placeholder="정답을 적어주세요.">
            <button class="confirm">정답 확인하기</button>
            <div class="result"></div>
        </div>
    </div>
</div>
</main>

body {
background-color: #f6f6f6;
background-image:
    linear-gradient(90deg, #cdcccc 0px, #cdcccc 1px, transparent 1px, transparent 99px, transparent 100px),
    linear-gradient(#cdcccc 0px, #cdcccc 1px, transparent 1px, transparent 99px, transparent 100px),
    linear-gradient(#e0e0e0 0px, #e0e0e0 1px, transparent 1px, transparent 99px, transparent 100px),
    linear-gradient(90deg, #e0e0e0 0px, #e0e0e0 1px, transparent 1px, transparent 99px, transparent 100px),
    linear-gradient(transparent 0px, transparent 5px, #f6f6f6 5px, #f6f6f6 95px, transparent 95px, transparent 100px),
    linear-gradient(90deg, #e0e0e0 0px, #e0e0e0 1px, transparent 1px, transparent 99px, #e0e0e0 99px, #e0e0e0 100px),
    linear-gradient(90deg, transparent 0px, transparent 5px, #f6f6f6 5px, #f6f6f6 95px, transparent 95px, transparent 100px),
    linear-gradient(transparent 0px, transparent 1px, #f6f6f6 1px, #f6f6f6 99px, transparent 99px, transparent 100px),
    linear-gradient(#cdcccc, #cdcccc);
background-size: 100px 100%, 100% 100px, 100% 10px, 10px 100%, 100% 100px, 100px 100%, 100px 100%, 100px 100px, 100px 100px;
}

#header {
background: #262626;
color: #fff;
display: flex;
justify-content: space-between;
/* 콘텐츠 양쪽 정렬 */
align-items: center;
padding: 10px;
position: relative;
z-index: 10;
}

#header::before {
content: '';
border: 4px ridge #a3a3a3;
position: absolute;
/* 기준점 */
left: 5px;
top: 5px;
width: calc(100% - 10px);
height: calc(100% - 10px);
box-sizing: border-box;
z-index: -1;
}

#header h1 {
font-family: "DungGeunMo";
padding: 3px 3px 5px 10px;
font-size: 30px;
color: rgb(255, 149, 0);
}

#header h1 em {
font-size: 16px;
font-style: normal;
color: #fff;
}
#header h1 a {
color: rgb(255, 149, 0);
}

@media (max-width:600px) {
#header h1 em {
    display: none;
}
}

#header nav {
padding-right: 10px;
}

#header nav li {
display: inline;
}

#header nav li a {
font-family: "DungGeunMo";
color: #fff;
padding: 0 10px;
border: 1px dashed #fff;
}

#header nav li.active a {
color: rgb(117, 57, 0);
background: rgb(255, 149, 0);
}

#footer {
background: #fff;
text-align: center;
padding: 20px;
width: 100%;
box-sizing: border-box;
position: fixed;
left: 0;
bottom: 0;
z-index: 10000;
}

#footer a {
color: #000;
font-family: "DungGeunMo";
}

#footer a:hover {
text-decoration: underline;
}

.quiz__wrap {
display: flex;
align-items: center;
justify-content: center;
margin-top: 50px;
margin-bottom: 150px;
}

.quiz {
max-width: 500px;
width: 100%;
background-color: #fff;
border: 8px ridge #cacaca;
margin: 10px;
margin-bottom: 150px;
}

.quiz__type {
background-color: #cacaca;
text-align: center;
display: block;
font-size: 16px;
border: 3px ridge #cacaca;
color: #3b3b3b;
font-family: "DungGeunMo";
padding: 4px;
}

.quiz__question {
font-family: 'PyeongChang';
border-top: 6px ridge #cacaca;
border-bottom: 6px ridge #cacaca;
padding: 20px;
line-height: 1.3;
}

.quiz__question .number {
color: rgb(255, 149, 0);
}

.quiz__question .ask {
display: inline;
}

.quiz__answer {
border-top: 6px ridge #cacaca;
padding: 10px;
background-color: #f5f5f5;
}

.quiz__answer .confirm {
font-family: 'PyeongChang';
border: 6px ridge #cacaca;
width: 100%;
font-size: 22px;
padding: 13px 20px;
background-color: #b6b6b6;
cursor: pointer;
}

.quiz__answer .result {
font-family: 'PyeongChang';
border: 6px ridge #cacaca;
width: 100%;
font-size: 22px;
padding: 13px 20px;
box-sizing: border-box;
text-align: center;
display: none;
}

.quiz__view {
background-color: #f5f5f5;
}


/* dog */
.dog .tail,
.dog .chin,
.dog .tongue::before,
.dog .tongue::after,
.dog .mouth,
.dog .nose,
.dog .teardrop,
.dog .eyes,
.dog .face::before,
.dog .face::after,
.dog .ears::before,
.dog .ears::after {
transition: 0.2s ease-in;
}

*:before,
*:after {
box-sizing: border-box;
}

.dog {
padding-top: 50px;
}

.dog .head,
.dog .body {
position: relative;
width: 115px;
}

.dog .head {
height: 115px;
border-radius: 50% 50% 0 0;
margin: 0 auto;
}

.dog .ears {
position: relative;
top: -14%;
width: 100%;
}

.dog .ears::before,
.dog .ears::after {
content: "";
position: absolute;
top: 0;
width: 35px;
height: 70px;
background: #CB7A1D;
border-top: 11px solid #F7AA2B;
border-left: 7px solid #F7AA2B;
border-right: 7px solid #F7AA2B;
}

.dog .ears::before {
left: 0;
border-radius: 50% 45% 0 0;
}

.dog .ears::after {
right: 0;
border-radius: 45% 50% 0 0;
}

.dog .face {
position: absolute;
background: #F7AA2B;
width: 100%;
height: 100%;
border-radius: 50% 50% 0 0;
}

.dog .face::before,
.dog .face::after {
content: "";
display: block;
margin: auto;
background: #FEFEFE;
}

.dog .face::before {
width: 15px;
height: 35px;
margin-top: 24px;
border-radius: 20px 20px 0 0;
}

.dog .face::after {
position: absolute;
bottom: -1px;
left: 0;
right: 0;
width: 60px;
height: 65px;
border-radius: 45% 45% 0 0;
}

.dog .eyes {
position: relative;
top: 29%;
text-align: center;
}

.dog .eyes::before,
.dog .eyes::after {
content: "";
display: inline-block;
width: 12px;
height: 12px;
border-radius: 100%;
background: #451D1C;
margin: 0 14.5%;
}

.dog .teardrop {
position: absolute;
top: 125%;
left: 19%;
width: 6px;
height: 6px;
border-radius: 0 50% 50% 50%;
transform: rotate(45deg);
background: #FEFEFE;
visibility: hidden;
}

.dog .nose {
position: relative;
top: 35%;
width: 16px;
height: 8px;
border-radius: 35px 35px 65px 65px;
background: #451D1C;
margin: auto;
}

.dog .mouth {
z-index: 1;
position: relative;
top: 34.5%;
width: 4px;
height: 6px;
margin: 0 auto;
text-align: center;
background: #451D1C;
}

.dog .mouth::before,
.dog .mouth::after {
content: "";
position: absolute;
top: -4px;
width: 18px;
height: 18px;
border-radius: 50%;
border: 4px solid #451D1C;
border-left-color: transparent;
border-top-color: transparent;
z-index: 2;
}

.dog .mouth::before {
transform: translateX(-89%) rotate(45deg);
}

.dog .mouth::after {
transform: translateX(-2px) rotate(45deg);
}

.dog .tongue {
position: relative;
z-index: 1;
}

.dog .tongue::before,
.dog .tongue::after {
content: "";
position: absolute;
}

.dog .tongue::before {
top: 10px;
left: -7px;
width: 18px;
height: 0;
border-radius: 50%;
background: #451D1C;
z-index: -1;
}

.dog .tongue::after {
top: 14px;
left: -4px;
width: 12px;
height: 0;
border-radius: 20px;
background: #F5534F;
z-index: 5;
}

.dog .chin {
position: relative;
top: 47.5%;
margin: 0 auto;
width: 12px;
height: 12px;
border-top: 10px solid #E8E7EC;
border-left: 5px solid transparent;
border-right: 5px solid transparent;
border-radius: 2px;
z-index: 0;
}

.dog .body {
position: relative;
height: 139px;
margin: auto;
z-index: 0;
}

.dog .body::before,
.dog .body::after {
content: "";
position: absolute;
top: -1px;
left: 0;
right: 0;
bottom: 0;
display: block;
width: 100%;
margin: auto;
background: #F7AA2B;
}

.dog .body::after {
top: -2px;
bottom: -1px;
width: 60px;
background: #FEFEFE;
}

.dog .tail {
position: absolute;
left: -60%;
bottom: 1px;
background: #F7AA2B;
width: 93px;
height: 15px;
transform: rotate(45deg);
transform-origin: 100% 50%;
border-radius: 25px 0 0 25px;
z-index: -2;
animation: movetail 0.1s linear infinite alternate forwards;
}

.dog .legs {
position: absolute;
bottom: 0;
left: -10%;
width: 120%;
height: 15%;
background: #F7AA2B;
border-radius: 10px 10px 0 0;
}

.dog .legs::before,
.dog .legs::after {
content: "";
position: absolute;
bottom: 1px;
background: #CB7A1D;
z-index: -1;
}

.dog .legs::before {
left: -7.5%;
width: 115%;
height: 55%;
border-radius: 5px 5px 0 0;
}

.dog .legs::after {
left: -3.5%;
width: 107%;
height: 250%;
border-radius: 20px 20px 35px 35px;
}

.dog.like .face::before {
margin-top: 10px;
}

.dog.like .face::after {
height: 85px;
}

.dog.like .eyes {
top: 13%;
}

.dog.like .eyes::before,
.dog.like .eyes::after {
width: 18px;
height: 5px;
margin: 0px 12.5%;
transform: rotate(-37.5deg);
border-radius: 20px;
}

.dog.like .eyes::after {
transform: rotate(37.5deg);
}

.dog.like .nose {
top: 18%;
}

.dog.like .mouth {
top: 16.5%;
}

.dog.like .tongue::before {
height: 12px;
}

.dog.like .tongue::after {
height: 24px;
animation: movetongue 0.1s linear 0.35s infinite alternate forwards;
}

.dog.like .chin {
top: 34%;
}

.dog.like .tail {
animation: movetail 0.1s linear infinite alternate forwards;
}

.dog.dislike .ears::before {
transform: rotate(-50deg) translate(-7px, 2px);
}

.dog.dislike .ears::after {
transform: rotate(50deg) translate(7px, 2px);
}

.dog.dislike .face::before {
margin-top: 28px;
}

.dog.dislike .face::after {
height: 55px;
}

.dog.dislike .eyes {
top: 38%;
}

.dog.dislike .eyes::before,
.dog.dislike .eyes::after {
width: 18px;
height: 5px;
margin: 0px 14.5%;
transform: rotate(-37.5deg);
border-radius: 20px;
}

.dog.dislike .eyes::after {
transform: rotate(37.5deg);
}

.dog.dislike .teardrop {
animation: cry 0.1s ease-in 0.25s forwards;
}

.dog.dislike .nose {
top: 44%;
}

.dog.dislike .mouth {
top: 42%;
}

.dog.dislike .chin {
top: 52%;
}

.dog.dislike .tail {
transform: rotate(0);
animation: none;
}

@keyframes movetongue {
100% {
    height: 27px;
}
}

@keyframes movetail {
0% {
    transform: rotate(37deg);
}

100% {
    transform: rotate(52deg);
}
}

@keyframes cry {
100% {
    visibility: visible;
}
}