好看的鼠标样式

今天学着 B 站上的教程，手写了一个好看的目标光标
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />

    <style>
      * {
        margin: 0;
        padding: 0;
        font-size: 1vmin;
        cursor: none;
      }

      body {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 100%;
        height: 100vh;
        background-color: #171717;
        overflow: hidden;
      }

      .pointer {
        --width: 4rem;
        --height: 4rem;

        position: fixed;
        top: calc(var(--height) / -2);
        left: calc(var(--width) / -2);

        width: var(--width);
        height: var(--height);

        transition: all 0.1s ease-out;
        pointer-events: none;
      }

      .pointer div {
        position: absolute;
        width: 1rem;
        height: 1rem;
        border-width: 0.3rem;
        border-color: pink;
      }

      .pointer div:nth-child(1) {
        top: 0;
        left: 0;
        border-top: 0.3rem solid pink;
        border-left: 0.3rem solid pink;
      }

      .pointer div:nth-child(2) {
        top: 0;
        right: 0;
        border-top: 0.3rem solid pink;
        border-right: 0.3rem solid pink;
      }

      .pointer div:nth-child(3) {
        bottom: 0;
        left: 0;
        border-bottom: 0.3rem solid pink;
        border-left: 0.3rem solid pink;
      }

      .pointer div:nth-child(4) {
        bottom: 0;
        right: 0;
        border-bottom: 0.3rem solid pink;
        border-right: 0.3rem solid pink;
      }

      /* ======================
   中心 十字 + 圆点
====================== */
      .pointer-center {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 100%;
        height: 100%;
        pointer-events: none;
      }

      /* 十字线 */
      .pointer-center::before,
      .pointer-center::after {
        content: '';
        position: absolute;
        background: pink;
      }
      .pointer-center::before {
        width: 0.25rem;
        height: 1.6rem;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
      }
      .pointer-center::after {
        width: 1.6rem;
        height: 0.25rem;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
      }

      /* 中心原点 */
      .pointer-center-dot {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 0.5rem;
        height: 0.5rem;
        background: pink;
        border-radius: 50%;
      }

      ._target {
        margin-bottom: 5rem;
      }

      p,
      section {
        font-family: Impact;
        font-size: 4rem;
        color: #f7f7f7;
        cursor: none;
      }

      section {
        padding: 5rem;
        background-color: #f7f7f7;
        color: #171717;
      }
    </style>
  </head>

  <body>
    <div class="pointer">
      <div></div>
      <div></div>
      <div></div>
      <div></div>
      <!-- 中心十字 + 圆点 -->
      <!-- <div class="pointer-center"></div> -->
      <!-- <div class="pointer-center-dot"></div> -->
    </div>

    <p class="_target">HOVER ME</p>
    <p class="_target">HOVER ME WITH MOUSE</p>
    <section class="_target">HOVER ME</section>

    <script>
      const pointer = {
          container: document.querySelector(".pointer"),
          current_target: null,

          angle: 0,
          mouseX: 0,
          mouseY: 0,

          followSpeed: 0.3,

          init() {
              window.addEventListener("mousemove", (e) => {
                  this.mouseX = e.clientX;
                  this.mouseY = e.clientY;
              });
              this.bind_targets_events();
              this.autoRotate();
          },

          autoRotate() {
              requestAnimationFrame(() => this.autoRotate());

              if (!this.current_target) {
                  this.angle -= 2;
              }

              this.updateTransform();
          },

          updateTransform() {
              if (this.current_target) {
                  const rect = this.current_target.getBoundingClientRect();
                  const x = rect.left + rect.width / 2;
                  const y = rect.top + rect.height / 2;
                  this.container.style.transform = `translate(${x}px, ${y}px) rotate(0deg)`;
              } else {
                  let currentX = parseFloat(getComputedStyle(this.container).transform.split(',')[4]) || 0;
                  let currentY = parseFloat(getComputedStyle(this.container).transform.split(',')[5]) || 0;

                  const speed = this.followSpeed;
                  currentX += (this.mouseX - currentX) * speed;
                  currentY += (this.mouseY - currentY) * speed;

                  this.container.style.transform = `translate(${currentX}px, ${currentY}px) rotate(${this.angle}deg)`;
              }
          },

          bind_targets_events() {
              […document.querySelectorAll("._target")].forEach(ele => {
                  ele.onmouseenter = () => {
                      this.current_target = ele;
                      const rect = ele.getBoundingClientRect();
                      this.container.style.setProperty("--width", rect.width + innerWidth / 50 + "px");
                      this.container.style.setProperty("--height", rect.height + innerWidth / 50 + "px");
                  };

                  ele.onmouseleave = () => {
                      this.current_target = null;
                      this.container.style.setProperty("--width", "4rem");
                      this.container.style.setProperty("--height", "4rem");
                  };
              });
          }
      };

      pointer.init();
    </script>
  </body>
</html>
组件

后面又发现了更专业的组件target-cursor