mouse Effect 03 - Javascript

<main>
    <div class="cursor"></div>
    <article class="mouseCont">
        <p>Pain is <em>temporary</em>Quitting lasts forever.</p>
        <h2>고통은 잠깐이다. <em>포기는</em>영원히 남는다.</h2>
    </article>
</main>

.mouseCont {
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
    color: #fff;
    height: 100vh;
    width: 100%;
    overflow: hidden;
    font-family: 'NEXONLv1Gothic';
    cursor: none;
}

.mouseCont p {
    font-size: 2.5vw;
    line-height: 2.3;
    font-weight: 300;
}

.mouseCont h2 {
    font-size: 3vw;
    font-weight: normal;
    font-weight: 400;
}

.mouseCont em {
    font-style: normal;
    border-bottom: 0.2vw dashed orange;
    color: orange;
}

.cursor {
    position: absolute;
    left: 0;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    z-index: 9999;
    background-color: #fff;
    user-select: none;
    pointer-events: none;
    transition: transform 0.3s, opacity 0.2s;
    mix-blend-mode: difference;
    /* 디퍼런스 효과 정리하기 */
}

.cursor.active {
    transform: scale(20);
}

.info.left.list li.active {
    text-decoration: underline;
    color: orange;
}

const w = document.querySelector('.cursor').clientWidth / 2;
const y = document.querySelector('.cursor').clientHeight / 2;
let text = 'difference';

//움직임 효과
document.addEventListener('mousemove', e => {
    gsap.to('.cursor', { duration: .5, left: e.pageX - w, top: e.pageY - y });
});

//hover 효과
document.querySelectorAll('.mouseCont em').forEach(em => {
    em.addEventListener('mouseenter', () => {
        document.querySelector('.cursor').classList.add('active');
        document.querySelector('.cursor.active').style.mixBlendMode = text;
    });
    em.addEventListener('mouseout', () => {
        document.querySelector('.cursor').classList.remove('active');
        document.querySelector('.cursor').style.mixBlendMode = 'normal';
    });
});

//출력용
document.querySelectorAll('.info.left.list li').forEach(li => {
    li.addEventListener('click', () => {
        document.querySelectorAll('.info.left.list li').forEach(el => {
            el.classList.remove('active');
        });
        li.classList.add('active');
        text = li.innerText;
    });
});