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Slider Effect06 - jquery

이미지 슬라이드 - 닷메뉴 추가

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<main>
    <div class="slider-wrap">
        <div class="slider-img">
            <div class="slider-inner">
                <div class="slider" data-name="이미지1">
                    <img src="../assets/img/bg22.jpg" alt="이미지1">
                </div>
                <div class="slider" data-name="이미지2">
                    <img src="../assets/img/bg24.jpg" alt="이미지2">
                </div>
                <div class="slider" data-name="이미지3">
                    <img src="../assets/img/bg26.jpg" alt="이미지3">
                </div>
                <div class="slider" data-name="이미지4">
                    <img src="../assets/img/bg28.jpg" alt="이미지4">
                </div>
                <div class="slider" data-name="이미지5">
                    <img src="../assets/img/bg21.jpg" alt="이미지5">
                </div>
            </div>
        </div>
        <div class="slider-btn">
            <a href="#" class="prev">prev</a>
            <a href="#" class="next">next</a>
        </div>
        <div class="slider-dot">
            <!-- <a href="#" class="dot active">1</a>
            <a href="#" class="dot">2</a>
            <a href="#" class="dot">3</a>
            <a href="#" class="dot">4</a>
            <a href="#" class="dot">5</a> -->
        </div>
    </div>
</main>

/* slider */
.slider-wrap {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.slider-img {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 480px;
    overflow: hidden;
}
.slider-img img {
    width: 100%;
}
.slider-inner {
    position: relative;
    /* width: 3200px; */
    height: 480px;
    overflow: hidden;
}
.slider-inner .slider {
    float: left;
    width: 800px;
    height: 480px;
    position: relative;
}
.slider-inner .slider::before {
    position: absolute;
    left: 5px;
    top: 5px;
    background: rgba(0,0,0,.4);
    color: #fff;
    padding: 5px 10px 3px;
    font-family: 'NEXONLv1Gothic';
}
.slider-inner .slider:nth-child(1) {
    z-index: 5;
}
.slider-inner .slider:nth-child(2) {
    z-index: 4;
}
.slider-inner .slider:nth-child(3) {
    z-index: 3;
}
.slider-inner .slider:nth-child(4) {
    z-index: 2;
}
.slider-inner .slider:nth-child(5) {
    z-index: 1;
}
.slider-inner .slider::before {
    content: attr(data-name);
}

.slider-btn a {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1000;
    width: 50px;
    height: 50px;
    background: rgba(0,0,0,.4);
    text-align: center;
    line-height: 50px;
    transition: all 0.2s;
    display: block;
    color: #fff;
    text-decoration: none;
}
.slider-btn a:hover {
    background: rgba(241, 96, 86, 1);
}
.slider-btn .prev {
    left: 0;
}
.slider-btn .next {
    right: 0;
}

.slider-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 20px;
}
.slider-dot .dot {
    width: 20px;
    height: 20px;
    background: rgba(0,0,0,.4);
    display: inline-block;
    border-radius: 50%;
    transition: all .3s;
    text-indent: -9999px;
    margin: 3px;
}
.slider-dot .dot.active {
    background: rgba(255,255,255,.9);
}

const sliderInner = $(".slider-inner");
const slider = $(".slider");
const sliderBtn = $(".slider-btn");
const sliderDot = $(".slider-dot");

let sliderCount = slider.length;
let sliderWidth = slider.width();
let sliderTotalWidth = sliderWidth * sliderCount;
let currentIndex = 0;
let dotIndex = "";

// 이미지 가로값 셋팅
sliderInner.css({width: sliderTotalWidth});

// 닷 버튼 생성
// 이미지 갯수만큼 닷 메뉴 생성
slider.each(function(index){
    dotIndex += "<a href='#' class='dot'>" + index + "</a>";
});
sliderDot.html(dotIndex);
sliderDot.find("a").eq(currentIndex).addClass("active");

// 이미지 움직이기
function gotoSlider(num){
    sliderInner.animate({left: -sliderWidth * num}, 500, "easeInQuart");
    currentIndex = num;
    sliderDot.find("a").removeClass("active").eq(currentIndex).addClass("active");
};

// 닷 메뉴 클릭하기
sliderDot.on("click", "a", function(e){
    e.preventDefault();
    gotoSlider($(this).index());
});

// 버튼 클릭하기
// sliderBtn.click(function(){});
sliderBtn.on("click", "a", function(e){
    e.preventDefault();
    let nextIndex = (currentIndex + 1) % sliderCount;
    let prevIndex = (currentIndex - 1) % sliderCount;

    if(currentIndex == 0) prevIndex = sliderCount - 1;

    if($(this).hasClass("prev")){
        gotoSlider(prevIndex); 
    } else {
        gotoSlider(nextIndex);
    }
    
});

// 소스보기 실행함수
modal();