패럴랙스 이펙트

Top

section1

질병은 입을 쫓아 들어가고 화근은 입을 좇아 나온다.

section2

지혜는 듣는 데서 오고 후회는 말하는 데서 온다.

section3

모든 날 중 가장 완전히 잃어버린 날은 웃지 않는 날이다.

section4

열의 없이 성취 된 위업이란 아직 하나도 없다.

section5

절제는 모든 진주 고리를 이어주는 비단의 실이다.

section6

기회는 새와 같은 것 날아가기 전에 꼭 잡아야 한다.

section7

요구받기 전에 충고하지 말라.

section8

오랫동안 꿈을 그리는 사람은 마침내 그 꿈을 닮아간다.

section9

몸가짐은 각자가 자기의 모습을 비추는 거울이다.

소스 보기

Javascript

HTML

CSS

let nowScroll = true;   //트리거 변수를 생성
let lastScroll = 0;

function scrollProgress(){
    nowScroll = true;

    setInterval(() => {
        if(nowScroll){
            nowScroll = false;
            hasScroll();
        }
    }, 300);
}

function hasScroll(){
    let scrollTop = window.pageYOffset || window.scrollY || document.documentElement.scrollTop;
    let topbtn = document.querySelector("#parallax__top");
    document.querySelector("#parallax__info span").innerText = Math.ceil(scrollTop);

    if(scrollTop < lastScroll){
        document.querySelector("#parallax__nav").classList.add("show");
    } else {
        document.querySelector("#parallax__nav").classList.remove("show");
    }
    lastScroll = scrollTop;

    if(scrollTop >= document.body.scrollHeight - window.innerHeight){
        topbtn.classList.add("show");
    } else {
        topbtn.classList.remove("show");
    }

    topbtn.addEventListener("click", ()=>{
        window.scroll({top: 0, behavior: "smooth"});
    });
}

window.addEventListener("scroll", scrollProgress);

<nav id="parallax__nav"  class="show">
    <ul>
        <li class="active"><a href="#section01">메뉴1</a></li>
        <li><a href="#section02">메뉴2</a></li>
        <li><a href="#section03">메뉴3</a></li>
        <li><a href="#section04">메뉴4</a></li>
        <li><a href="#section05">메뉴5</a></li>
        <li><a href="#section06">메뉴6</a></li>
        <li><a href="#section07">메뉴7</a></li>
        <li><a href="#section08">메뉴8</a></li>
        <li><a href="#section09">메뉴9</a></li>
    </ul>
</nav>
<!-- parallax__nav -->

<div id="parallax__top">
    Top
</div>
<!-- parallax__top -->

/* parallax__nav */
#parallax__nav {
    position: fixed;
    right: 20px;
    top: -200px;
    z-index: 2000;
    background-color: rgba(0,0,0,0.4);
    padding: 20px 30px;
    border-radius: 50px;
    transition: all .4s ease;
}
#parallax__nav.show {
    top: 20px;
}
#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_img10-min.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_img10-min.jpg);
}
.content__item:nth-child(2) .content__item__img {
    background-image: url(../assets/img/effect_img09-min.jpg);
}
.content__item:nth-child(3) .content__item__img {
    background-image: url(../assets/img/effect_img08-min.jpg);
}
.content__item:nth-child(4) .content__item__img {
    background-image: url(../assets/img/effect_img07-min.jpg);
}
.content__item:nth-child(5) .content__item__img {
    background-image: url(../assets/img/effect_img06-min.jpg);
}
.content__item:nth-child(6) .content__item__img {
    background-image: url(../assets/img/effect_img05-min.jpg);
}
.content__item:nth-child(7) .content__item__img {
    background-image: url(../assets/img/effect_img04-min.jpg);
}
.content__item:nth-child(8) .content__item__img {
    background-image: url(../assets/img/effect_img03-min.jpg);
}
.content__item:nth-child(9) .content__item__img {
    background-image: url(../assets/img/effect_img02-min.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: -150px;
        transform: translateY(-50%);
        border-radius: 5px;
        background-color: rgba(0,0,0,0.8);
    }
    #parallax__nav.show {
        top: 50%
    }
    #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;
    }
}
#parallax__top {
    position: fixed;
    left: 50%;
    bottom: -200px;
    z-index: 10000;
    transform: translate(-50%);
    width: 40px;
    height: 40px;
    background: rgba(0,0,0,0.4);
    text-align: center;
    line-height: 40px;
    color: #fff;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s;
}
#parallax__top.show {
    bottom: 20px;
}
#parallax__top:hover {
    background: #fff;
    color: #000;
}