패럴랙스 이펙트01

section1

인간은 죽음을 두려워한다. 그것은 생을 사랑하기 때문이다.

section2

말을 많이 하는 것과 말을 잘하는 것은 다르다.

section3

오늘 할 수 있는 일에 전력을 다하라, 그러면 내일에는 한 걸음 더 진보한다.

section4

최대 다수의 최대 행복을 얻는 행동이 최선이다.

section5

나는 죽음을 겁내지 않는다. 다만 의무를 다하지 않고 사는 것을 겁낸다.

section6

모든 날 중 가장 완전히 잃어버린 날은 웃지 않는 날이다.

section7

열의 없이 성취 된 위업이란 아직 하나도 없다.

section8

독수리는 마지막 성공을 거둘 때까지 온 생명을 다한다.

section9

행운은 자주 문을 두드리나 미련한 자는 그것을 받아들이지 않는다.

소스 보기

Javascript

HTML

CSS

const scroll = document.querySelector("#parallax__info .scroll span");
        
window.addEventListener("scroll", () => {
    // let scrollTop = window.pageYOffset;
    // let scrollTop = window.scrollY;
    // let scrollTop = document.documentElement.scrollTop;
    let scrollTop = window.pageYOffset || window.scrollY || document.documentElement.scrollTop;

    // if(scrollTop >= document.getElementById("section+i").offsetTop) {
    //     document.querySelectorAll("#parallax__nav li").forEach(li => {
    //         li.classList.remove("active");
    //     });
    
    // //for문
    //  for(let i = 1; i < 10; i++) {
    //      if(scrollTop >= document.getElementById("section"+i).offsetTop){
    //          document.querySelectorAll("#parallax__nav li").forEach(li => {
    //              li.classList.remove("active");
    //          })
    //         document.querySelector("#parallax__nav li:nth-child("+ i + ")").classList.add("active");
    //      }
            
    //  }

    //fotEach문
    document.querySelectorAll(".content__item").forEach ((element, index) => {
        if(scrollTop >= element.offsetTop - 2) {
            document.querySelectorAll("#parallax__nav li").forEach(li => {
                li.classList.remove("active")
            });
            document.querySelector("#parallax__nav li:nth-child(" + (index+1) + ")").classList.add("active")
        };
        
    })
    document.querySelector(".scroll span").innerText = Math.round(scrollTop);
    
    //for문 영역의 값
    for(let i = 1 ; i < 10 ; i++) {
        document.querySelector(".offset"+i).innerText = document.getElementById("section"+ i).offsetTop;
    };
});

//스크롤 이동
document.querySelectorAll("#parallax__nav li a").forEach(li => {
    li.addEventListener("click", (e) => {
        e.preventDefault();
        document.querySelector(li.getAttribute("href")).scrollIntoView({
            behavior: "smooth"
        });
    });
});

<main id="parallax__cont">
    <div class="contents">
        <section id="section1" class="content__item">
            <span class="content__item__num">01</span>
            <h2 class="content__item__title">section1</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>
            <p class="content__item__desc">인간은 죽음을 두려워한다. 그것은 생을 사랑하기 때문이다.</p>
        </section>
        <!-- //section1 -->
        
        <section id="section2" class="content__item">
            <span class="content__item__num">02</span>
            <h2 class="content__item__title">section2</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>
            <p class="content__item__desc">말을 많이 하는 것과 말을 잘하는 것은 다르다.</p>
        </section>
        <!-- //section2 -->
        
        <section id="section3" class="content__item">
            <span class="content__item__num">03</span>
            <h2 class="content__item__title">section3</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>
            <p class="content__item__desc">오늘 할 수 있는 일에 전력을 다하라, 그러면 내일에는 한 걸음 더 진보한다.</p>
        </section>
        <!-- //section3 -->
        
        <section id="section4" class="content__item">
            <span class="content__item__num">04</span>
            <h2 class="content__item__title">section4</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>
            <p class="content__item__desc">최대 다수의 최대 행복을 얻는 행동이 최선이다.</p>
        </section>
        <!-- //section4 -->
        
        <section id="section5" class="content__item">
            <span class="content__item__num">05</span>
            <h2 class="content__item__title">section5</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>
            <p class="content__item__desc">나는 죽음을 겁내지 않는다. 다만 의무를 다하지 않고 사는 것을 겁낸다.</p>
        </section>
        <!-- //section5 -->
        
        <section id="section6" class="content__item">
            <span class="content__item__num">06</span>
            <h2 class="content__item__title">section6</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>
            <p class="content__item__desc">모든 날 중 가장 완전히 잃어버린 날은 웃지 않는 날이다.</p>
        </section>
        <!-- //section6 -->
        
        <section id="section7" class="content__item">
            <span class="content__item__num">07</span>
            <h2 class="content__item__title">section7</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>
            <p class="content__item__desc">열의 없이 성취 된 위업이란 아직 하나도 없다.</p>
        </section>
        <!-- //section7 -->
        
        <section id="section8" class="content__item">
            <span class="content__item__num">08</span>
            <h2 class="content__item__title">section8</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>
            <p class="content__item__desc">독수리는 마지막 성공을 거둘 때까지 온 생명을 다한다.</p>
        </section>
        <!-- //section8 -->
        
        <section id="section9" class="content__item">
            <span class="content__item__num">09</span>
            <h2 class="content__item__title">section9</h2>
            <figure class="content__item__imgWrap">
                <div class="content__item__img"></div>
            </figure>
            <p class="content__item__desc">행운은 자주 문을 두드리나 미련한 자는 그것을 받아들이지 않는다.</p>
        </section>
        <!-- //section9 -->
    </div>
</main>
<!-- //main -->

<aside id="parallax__info">
    <div class="scroll">scrollTop : <span>0</span>px</div>
    <div class="scroll">
        <ul>
            <li>section1 offset() : <span class="offset1">0</span>px</li>
            <li>section2 offset() : <span class="offset2">0</span>px</li>
            <li>section3 offset() : <span class="offset3">0</span>px</li>
            <li>section4 offset() : <span class="offset4">0</span>px</li>
            <li>section5 offset() : <span class="offset5">0</span>px</li>
            <li>section6 offset() : <span class="offset6">0</span>px</li>
            <li>section7 offset() : <span class="offset7">0</span>px</li>
            <li>section8 offset() : <span class="offset8">0</span>px</li>
            <li>section9 offset() : <span class="offset9">0</span>px</li>
        </ul>
    </div>
</aside>

/* parallax__nav */
#parallax__nav {
    position: fixed;
    right: 20px;
    top: 20px;
    z-index: 2000;
    background-color: rgba(0,0,0,0.4);
    padding: 20px 30px;
    border-radius: 50px;
}
#parallax__nav li {
    display: inline;
    margin: 0 5px;
}
#parallax__nav li a {
    display: inline-block;
    height: 30px;
    padding: 5px 20px;
    text-align: center;
    line-height: 30px;
}
#parallax__nav li.active a {
    background-color: #fff;
    color: #222;
    border-radius: 20px;
    box-sizing: content-box;
}

/* parallax__cont */
#parallax__cont {
    max-width: 1600px;
    width: 98%;
    margin: 0 auto;
    /* background-color: rgba(255,255,255,0.1); */
}

.content__item {
    width: 1000px;
    max-width: 70vw;
    margin: 30vw auto;
    /* background-color: rgba(255,255,255,0.3); */
    text-align: left;
    margin-right: 0;
    position: relative;
    padding-top: 9vw;
}
.content__item:nth-child(even) {      /* 2n: n은 변수, even: 짝수만 선택 */
    margin-left: 0;
    text-align: right;
}
.content__item:nth-child(even) .content__item__num {
    left: auto;  /*left 값 초기화 */
    right: -5vw;
}
.content__item__num {
    font-size: 35vw;
    font-family: 'Lato';
    font-weight: 100;
    position: absolute;
    left: -5vw;
    top: -13vw;
    opacity: 0.07;
    z-index: -2;
}
.content__item__title {
    font-weight: 400;
    text-transform: capitalize;     /* 첫글자만 대문자 */
}
.content__item__imgWrap {
    width: 100%;
    padding-bottom: 56.25%;
    background-color: #000;
    position: relative;
    overflow: hidden;
    z-index: -1;
}
.content__item__img {
    position: absolute;
    background-image: url(../assets/img/effect_bg19.jpg);
    background-repeat: no-repeat;
    background-position: center center;
    width: 110%;
    background-size: cover;
    height: 110%;
    left: -5%;
    top: -5%;
    filter: saturate(0%);
    transition: all 1s;
}
.content__item:nth-child(1) .content__item__img{
    background-image: url(../assets/img/effect_bg13.jpg);
}
.content__item:nth-child(2) .content__item__img{
    background-image: url(../assets/img/effect_bg19.jpg);
}
.content__item:nth-child(3) .content__item__img{
    background-image: url(../assets/img/effect_bg08.jpg);
}
.content__item:nth-child(4) .content__item__img{
    background-image: url(../assets/img/effect_bg09.jpg);
}
.content__item:nth-child(5) .content__item__img{
    background-image: url(../assets/img/effect_bg18.jpg);
}
.content__item:nth-child(6) .content__item__img{
    background-image: url(../assets/img/effect_bg17.jpg);
}
.content__item:nth-child(7) .content__item__img{
    background-image: url(../assets/img/effect_bg06.jpg);
}
.content__item:nth-child(8) .content__item__img{
    background-image: url(../assets/img/effect_bg01.jpg);
}
.content__item:nth-child(9) .content__item__img{
    background-image: url(../assets/img/effect_bg15.jpg);
}
.content__item__desc {
    font-size: 4vw;
    line-height: 1.4;
    margin-top: -5vw;
    margin-left: -4vw;
    word-break: keep-all;
}
.content__item:nth-child(even) .content__item__desc {
    margin-left: auto;
    margin-right: -4vw;
}
#parallax__info {
    position: fixed;
    left: 20px;
    bottom: 20px;
    z-index: 2000;
    background-color: rgba(0,0,0,0.6);
    color: #fff;
    padding: 20px;
    border-radius: 10px;
}
#parallax__info li, .scrollTop  {
    line-height: 1.4;
}
@media(max-width: 800px) {
    #parallax__cont {
        margin-top: 70vw;
    }
    #parallax__nav {
        padding: 10px;
        right: auto;
        left: 10px;
        top: 50%;
        transform: translateY(-50%);
        border-radius: 5px;
        background-color: rgba(0,0,0,0.8);
    }
    #parallax__nav li {
        display: block;
        margin: 5px;
    }
    #parallax__nav li a {
        font-size: 14px;
        padding: 5px;
        border-radius: 5px;
        height: auto;
        line-height: 1;
    }
    #parallax__nav li.active a {
        border-radius: 5px;
    }
    #parallax__info {
        left: 10px;
        bottom: 10px;
    }
}