Javascript Mouse Effect03

<main>
    <section id="mouseType03">
        <div class="cursor"></div>

        <div class="mouse__wrap">
            <p><span>Fortune</span> only smiles to those who are prepared</p>
            <p><span>행운은</span> 마음의 준비가 있는 사람에게만 미소를 짓는다</p>
        </div>
    </section>
</main>

body::before {
    background: rgba(6, 49, 2, 0.842);
}

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

.mouse__wrap p {
    font-size: 2.5vw;
    line-height: 2;
    font-weight: 300;
}

.mouse__wrap p:last-child {
    font-size: 3vw;
    font-weight: 400;
}

.mouse__wrap p span {
    border-bottom: 0.15vw dashed orange;
    color: orange;
}

.cursor {
    position: absolute;
    left: 0px;
    top: 0px;
    width: 200px;
    height: 200px;
    z-index: -1;
    border-radius: 50%;
    background-image: url(img/img1.jpg);
    background-size: cover;
    background-position: center center;
    background-attachment: fixed;
    border: 5px solid #fff;
}

function follow(e){
    // const circle1 = document.querySelector(".cursor").clientWidth;  //190 : border값 빠진 상태
    // const circle2 = document.querySelector(".cursor").offsetWidth;  //200 : border값 포함 상태
    const circle3 = document.querySelector(".cursor").getBoundingClientRect();  //bottom, height, left, right, top, width, x(좌표값), y(좌표값)

    // console.log(circle1);
    // console.log(circle2);
    // console.log(circle3);
    
    //div.cursor를 마우스 정 가운데로 위치시킨다.
    gsap.to(".cursor", {duration: .3, left: e.pageX - (circle3.width / 2), top: e.pageY - (circle3.height / 2)});

    //출력용
    document.querySelector(".pageX").innerText = e.pageX;
    document.querySelector(".pageY").innerText = e.pageY;
}

window.addEventListener("mousemove", follow);   //mousemove이벤트 발생 시 follow함수 실행