sliderEffect | 슬라이드 이펙트 03

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JAVASCRIPT

HTML

CSS

 const sliderWrap = document.querySelector(".slider__wrap");
const sliderImg = document.querySelector(".slider__img"); // 보여지는 영역
const sliderInner = document.querySelector(".slider__inner"); // 움직이는 영역
const slider = document.querySelectorAll(".slider");
const sldierBtn = document.querySelector(".slider__btn"); // 버튼
const sldierBtnPrev = sldierBtn.querySelector(".prev"); // 왼쪽 버튼
const sldierBtnNext = sldierBtn.querySelector(".next"); // 오른쪽 버튼

let currentIndex = 0; // 현재 이미지
let sliderCount = slider.length; // 이미지 갯수
let sliderWidth = sliderImg.offsetWidth; // 이미지 가로값

// 이미지 움직이는 영역
function gotoSlider(num) {
    sliderInner.style.transition = "all 400ms";
    sliderInner.style.transform = "translateX(" + -sliderWidth * num + "px)";
    currentIndex = num;
}

// 왼쪽 버튼을 클릭 했을 때
sldierBtnPrev.addEventListener("click", () => {
    let prevIndex = (currentIndex + (sliderCount - 1)) % sliderCount;

    // 현재 값에서 -1만 하면 된다.
    gotoSlider(prevIndex);
});
// 오른쪽 버튼을 클릭 했을 때
sldierBtnNext.addEventListener("click", () => {
    let nextIndex = (currentIndex + 1) % sliderCount;

    // 0 ~ 4 까지 가능하다.
    gotoSlider(nextIndex);
});

<!-- header start -->
<header id="header">
    <h1>JAVASCRIPT Slider Effect No. 04</h1>
    <p>슬라이드 이펙트 | 좌 우로 움직이기</p>
    <ul>
        <li><a href="sliderEffect01.html">1</a></li>
        <li><a href="sliderEffect02.html">2</a></li>
        <li><a href="sliderEffect03.html">3</a></li>
        <li class="active"><a href="sliderEffect04.html">4</a></li>
        <li><a href="sliderEffect05.html">5</a></li>
        <li><a href="sliderEffect06.html">6</a></li>
        <li><a href="sliderEffect07.html">7</a></li>
    </ul>
</header>

<!-- main start -->
<main id="main">
    <section id="sliderType01">
        <div class="slider__wrap">
            <div class="slider__img">
                <div class="slider__inner">
                    <div class="slider" role="group" aria-label="1/5"><img src="../assets/img/sliderEffect01_bg02-min.jpg" alt="이미지01" /></div>
                    <div class="slider" role="group" aria-label="2/5"><img src="../assets/img/sliderEffect01_bg03-min.jpg" alt="이미지02" /></div>
                    <div class="slider" role="group" aria-label="3/5"><img src="../assets/img/sliderEffect01_bg04-min.jpg" alt="이미지03" /></div>
                    <div class="slider" role="group" aria-label="4/5"><img src="../assets/img/sliderEffect01_bg05-min.jpg" alt="이미지04" /></div>
                    <div class="slider" role="group" aria-label="5/5"><img src="../assets/img/sliderEffect01_bg06-min.jpg" alt="이미지05" /></div>
                </div>
            </div>
            <div class="slider__btn">
                <a href="#" class="prev">prev</a>
                <a href="#" class="next">next</a>
            </div>
        </div>
    </section>
</main>

/* slider */
.slider__wrap {
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider__img {
    /* 이미지 보이는 영역 */
    /* position: relative;  JQurey 용 */
    width: 800px;
    height: 450px;
    overflow: hidden;
}

.slider__inner {
    /* 이미지를 감싸고 있는 부모 요소 : 움직이는 부분 */
    position: relative;
    display: flex;
    flex-wrap: wrap;
    width: 4800px;
    height: 450px;
}

.slider {
    /* 개별적 이미지 */
    position: relative;
    width: 800px;
    height: 450px;
}

.slider::before {
    margin: 5px;
    padding: 7px;
    border-radius: 5px;
    position: absolute;
    left: 5px;
    top: 5px;
    background-color: rgba(34, 34, 34, 0.698);
    color: rgb(199, 199, 199);
}

.slider:nth-child(1)::before {
    content: "image 01";
}

.slider:nth-child(2)::before {
    content: "image 02";
}

.slider:nth-child(3)::before {
    content: "image 03";
}

.slider:nth-child(4)::before {
    content: "image 04";
}

.slider:nth-child(5)::before {
    content: "image 05";
}
.slider:nth-child(6)::before {
    content: "image 01";
}

.slider:nth-child(1) {
    z-index: 5;
}

.slider:nth-child(2) {
    z-index: 4;
}

.slider:nth-child(3) {
    z-index: 3;
}

.slider:nth-child(4) {
    z-index: 2;
}

.slider:nth-child(5) {
    z-index: 1;
}

@media (max-width: 800px) {
    .slider__img {
        width: 400px;
        height: 225px;
    }
}

.slider__btn a {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.4);
    text-align: center;
    line-height: 50px;
    display: block;
    color: #fff;
    border-radius: 50%;
}
.slider__btn a:hover {
    background-color: rgba(255, 120, 36, 0.4);
}
.slider__btn a.prev {
    left: 0;
}
.slider__btn a.next {
    right: 0;
}