패럴랙스 이펙트 06

패럴랙스 이펙트

자바스크립트를 이용해 스크롤 시 다양한 효과가 발생하는 이펙트 만들기 입니다.

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패럴랙스 이펙트 06 - 텍스트 효과

스크롤을 내릴 때 텍스트의 각 문자가 시간차를 두고 등장하는 효과입니다.

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코드 보기

스크롤 위치에 따라 문자를 나타내는건 쉽지만 각각의 문자를 따로 나타내게 하려면 split( )과 join( )메서드를 사용해야 합니다.

소스보기

-HTML파트-
<main id="parallax__cont">
    <div id="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 split">결과도 중요하지만, 과정을 더 중요하게 생각한다.</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 split">피할수 없으면 즐겨라.</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 split">1퍼센트의 가능성, 그것이 나의 길이다.</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 split">꿈을 계속 간직하고 있으면 반드시 실현할 때가 온다.</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 split">눈물과 더불어 빵을 먹어 보지 않은 자는 인생의 참다운 맛을 모른다.</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 split">폼은 일시적이지만, 클래스는 영원하다.</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 split">고개 숙이지 마십시오. 세상을 똑바로 정면으로 바라보십시오.</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 split">자신을 내보여라. 그러면 재능이 드러날 것이다.</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 split">인생에 뜻을 세우는데 있어 늦은 때라곤 없다.</p>
        </section>
        <!-- section9 -->
    </div>
</main>
<!-- //main -->

-CSS 파트-
#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;
    transition: top .4s ease;
}
#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: #fff;
    color: #000;
    border-radius: 20px;
    box-sizing: content-box; /*박스사이징-보더박스를 푸는 방법*/
}
#parallax__cont {
    max-width: 1500px;
    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(255,255,255,0.1); */
    text-align: left;
    margin-right: 0;
    position: relative;
    padding-top: 15vw;
}
.content__item:nth-child(2n) {  /*짝수만 선택하는 방법 even이라 적어도 된다.*/
    margin-left: 0;
    text-align: right;
}

.content__item__num {
    font-size: 35vw;
    font-family: "Lato";
    font-weight: 100;
    position: absolute;
    left: -5vw;
    top: -7vw;
    opacity: 0.07;
    z-index: -2;
}
.content__item:nth-child(even) .content__item__num {
    left: auto;     /*레프트값 초기화*/
    right: -5vw;
}
.content__item__title {
    font-weight: 400;
    text-transform: capitalize; /*첫글자만 대문자로 바꾸는 방법*/
}
.content__item__imgWrap {
    width: 100%;
    padding-bottom: 56.25%;
    background: #000;
    position: relative;
    overflow: hidden;
    z-index: -1;
}
.content__item__img {
    position: absolute;
    /* background-image: url(../assets/img/effect_bg05-min.jpg); */
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    width: 110%;
    height: 110%;
    left: -5%;
    top: -5%;
    filter: saturate(0%);   /*흑백효과*/
    /* transition: all 1s; */
}
.content__item:nth-child(1) .content__item__img {
    background-image: url(../assets/img/effect_bg01-min.jpg);
}
.content__item:nth-child(2) .content__item__img {
    background-image: url(../assets/img/effect_bg02-min.jpg);
}
.content__item:nth-child(3) .content__item__img {
    background-image: url(../assets/img/effect_bg03-min.jpg);
}
.content__item:nth-child(4) .content__item__img {
    background-image: url(../assets/img/effect_bg04-min.jpg);
}
.content__item:nth-child(5) .content__item__img {
    background-image: url(../assets/img/effect_bg05-min.jpg);
}
.content__item:nth-child(6) .content__item__img {
    background-image: url(../assets/img/effect_bg06-min.jpg);
}
.content__item:nth-child(7) .content__item__img {
    background-image: url(../assets/img/effect_bg07-min.jpg);
}
.content__item:nth-child(8) .content__item__img {
    background-image: url(../assets/img/effect_bg08-min.jpg);
}
.content__item:nth-child(9) .content__item__img {
    background-image: url(../assets/img/effect_bg09-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;
}

#parallex__info {
    position: fixed;
    left: 20px;
    bottom: 20px;
    z-index: 2000;
    background: rgba(0,0,0,0.6);
    color: #fff;
    padding: 20px;
    border-radius: 10px;
}
#parallex__info li, .scroll {
    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;
    }
    #parallex__info {
        left: 10px;
        bottom: 10px;
    }
}

/* option */
.split span {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.3s ease-in-out;
    display: inline-block;
    min-width: 1vw
}
.split span.show  {
    opacity: 1;
    transform: translateY(0);
}
/* .split.show span {
    opacity: 1;
    transform: translateY(0);
} */
/* .split span:nth-child(1) {transition-delay: 100ms;}
.split span:nth-child(2) {transition-delay: 150ms;}
.split span:nth-child(3) {transition-delay: 200ms;}
.split span:nth-child(4) {transition-delay: 250ms;}
.split span:nth-child(5) {transition-delay: 300ms;}
.split span:nth-child(6) {transition-delay: 350ms;}
.split span:nth-child(7) {transition-delay: 400ms;}
.split span:nth-child(8) {transition-delay: 450ms;}
.split span:nth-child(9) {transition-delay: 500ms;}
.split span:nth-child(10) {transition-delay: 550ms;}
.split span:nth-child(11) {transition-delay: 600ms;}
.split span:nth-child(12) {transition-delay: 650ms;}
.split span:nth-child(13) {transition-delay: 700ms;}
.split span:nth-child(14) {transition-delay: 750ms;}
.split span:nth-child(15) {transition-delay: 800ms;}
.split span:nth-child(16) {transition-delay: 850ms;}
.split span:nth-child(17) {transition-delay: 900ms;}
.split span:nth-child(18) {transition-delay: 950ms;}
.split span:nth-child(19) {transition-delay: 1000ms;}
.split span:nth-child(20) {transition-delay: 1050ms;}
.split span:nth-child(21) {transition-delay: 1100ms;}
.split span:nth-child(22) {transition-delay: 1150ms;}
.split span:nth-child(23) {transition-delay: 1200ms;}
.split span:nth-child(24) {transition-delay: 1250ms;}
.split span:nth-child(25) {transition-delay: 1300ms;}
.split span:nth-child(26) {transition-delay: 1350ms;}
.split span:nth-child(27) {transition-delay: 1400ms;} */

-자바스크립트 파트-
// 글씨 분리하기
// let text = document.querySelector("#section1 .content__item__desc");
// let splitText = text.innerText;
// let splitWrap = splitText.split('').join('');
// text.innerHTML = splitWrap = "" + splitWrap + "";
// console.log(splitWrap)

// 글씨 전부 쪼개기 (forEach 사용)
document.querySelectorAll(".split").forEach(text => {
    let splitText = text.innerText;
    let splitWrap = splitText.split('').join("");
    splitWrap = "" + splitWrap + "";
    text.innerHTML = splitWrap;
    text.setAttribute("aria-label", splitText);
});

function scroll(){
    let scrollTop = window.scrollY;
    document.querySelector("#parallex__info .scroll").innerText = Math.round(scrollTop);

    // CSS 클래스 추가 노가다 작업
    // document.querySelectorAll(".content__item").forEach(item => {
    //     if(scrollTop >= item.offsetTop){
    //         item.querySelector(".split").classList.add("show");
    //     }
    // });

    document.querySelectorAll(".content__item").forEach(item => {
        if(scrollTop >= item.offsetTop){
            item.querySelectorAll(".split span").forEach((span, index) => {
                span.classList.add("show");
                let k = 100 + 50*index;
                span.style.transitionDelay = `${k}ms`;
            });
        }
    });

    requestAnimationFrame(scroll);

    // 첫번째 span --> 0.01초
    // 두번째 span --> 0.02초
    // 세번째 span --> 0.03초
    // 네번째 span --> 0.04초
    // 다섯번째 span --> 0.05초
    // 여섯번째 span --> 0.06초
}
scroll();

split( ) 메서드로 각 문자를 배열로 분리하고 join( ) 메서드로 배열을 문자열로 바꾸는 동시에 각 문자에 span 태그를 추가해 문자마다 효과를 줄 태그를 만듭니다 이 후 하나 하나 일일이 애니메이션에 딜레이를 넣을 수 도 있지만 forEach문의 index를 사용하면 스크립트로 간편히 처리할 수 있습니다.

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