슬라이더 이펙트

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CSS

const sliderWrap = document.querySelector(".slider__wrap");
const sliderImg = document.querySelector(".slider__img");
const slider = document.querySelectorAll(".slider");
let timeCount = 0;
let currentIndex = 0;                   //현재 보이는 이미지
let sliderCount = slider.length;        //이미지 갯수
const silderTimer = setInterval(() => {
    // timeCount == sliderCount * 5 -1 ? clearInterval(silderTimer) : timeCount++;
    timeCount == timeCount++
    //console.log(timeCount)
    let nextIndex = (currentIndex + 1 ) % sliderCount;
    slider[currentIndex].style.opacity = "0"; //첫번째 이미지를 안보이게
    slider[nextIndex].style.opacity = "1"; //두번째 이미지를 보이게
    currentIndex = nextIndex; //currentIndex를 다음 이미지로 넘김
}, 1000);

<div class="slider__wrap">
    <div class="slider__img">
        <div class="slider"><img src="../assets/img/effect_bg11@2x.jpg" alt="동물사진"></div>
        <div class="slider"><img src="../assets/img/effect_bg12@2x.jpg" alt="동물사진"></div>
        <div class="slider"><img src="../assets/img/effect_bg13@2x.jpg" alt="동물사진"></div>
        <div class="slider"><img src="../assets/img/effect_bg14@2x.jpg" alt="동물사진"></div>
        <div class="slider"><img src="../assets/img/effect_bg15@2x.jpg" alt="동물사진"></div>
        <div class="slider"><img src="../assets/img/effect_bg16@2x.jpg" alt="동물사진"></div>
        <div class="slider"><img src="../assets/img/effect_bg17@2x.jpg" alt="동물사진"></div>
        <div class="slider"><img src="../assets/img/effect_bg18@2x.jpg" alt="동물사진"></div>
        <div class="slider"><img src="../assets/img/effect_bg19@2x.jpg" alt="동물사진"></div>
        <div class="slider"><img src="../assets/img/effect_bg20@2x.jpg" alt="동물사진"></div>
        <sapn class="img_name"></sapn>
    </div>
</div>

/* slider */
.slider__wrap {
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.slider__img {
    position: relative;
    height: 450px;
    width: 800px;
}
.slider {
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0;
}
.slider::before {
    content: '';
    position: absolute;
    left: 5px;
    top: 5px;
    background: rgba(0, 0, 0, 0.4);
    color: #fff;
    padding: 5px 10px;
}
.slider:nth-child(1) {opacity: 1;}
.slider:nth-child(1)::before {content: '이미지1';}  
.slider:nth-child(2)::before {content: '이미지2';}
.slider:nth-child(3)::before {content: '이미지3';}
.slider:nth-child(4)::before {content: '이미지4';}
.slider:nth-child(5)::before {content: '이미지5';}
.slider:nth-child(6)::before {content: '이미지6';}
.slider:nth-child(7)::before {content: '이미지7';}
.slider:nth-child(8)::before {content: '이미지8';}
.slider:nth-child(9)::before {content: '이미지9';}
.slider:nth-child(10)::before {content: '이미지10';}

@media (max-width: 800px){
    .slider__wrap {
    width: 100%;
    height: 100vh;
    }
}