一个丝滑的页面上下滚动效果

<template>
  <div ref="scrollContainer" class="scroll-container">
    <div ref="scrollContent" class="scroll-content">
      
    </div>
  </div>
</template>

<script setup lang="ts">
import { ref, markRaw, onMounted, onUnmounted } from "vue";
import { Search } from "@element-plus/icons-vue";
import { useRouter } from "vue-router";


let router = useRouter();

// import projectShow from "@/components/indexCom/projectShow.vue";
const scrollContainer = ref<HTMLElement | null>(null);
const scrollContent = ref<HTMLElement | null>(null);
let targetScrollY = 0;
let currentScrollY = 0;
let ticking = false;

const background = ref(null);

const handleScrollBg = () => {
  const scrollY = window.scrollY;
  if (scrollY !== 0 && background.value) {
    background.value.style.backgroundPosition = `calc(50% + ${scrollY}px) calc(50% + ${scrollY}px)`;
  } else if (background.value) {
    background.value.style.backgroundPosition = "";
  }
};
// 页面平滑过渡
const smoothScroll = () => {
  if (!scrollContent.value) return; // 保护性检查，确保不为空
  currentScrollY += (targetScrollY - currentScrollY) * 0.09; // 让滚动有缓动效果
  scrollContent.value.style.transform = `translateY(${-currentScrollY}px)`;

  if (Math.abs(targetScrollY - currentScrollY) > 0.5) {
    requestAnimationFrame(smoothScroll);
  } else {
    ticking = false;
  }
};

const handleScroll = (event: { deltaY: number }) => {
  if (!scrollContent.value) return;
  targetScrollY += event.deltaY;
  targetScrollY = Math.max(
    0,
    Math.min(
      targetScrollY,
      scrollContent.value.scrollHeight - window.innerHeight
    )
  );
  if (!ticking) {
    requestAnimationFrame(smoothScroll);
    ticking = true;
  }
};

onMounted(() => {
  console.log(window.addEventListener, "Component mounted"); // 调试日志
  window.addEventListener("scroll", handleScrollBg);
  if (scrollContainer.value) {
    scrollContainer.value.addEventListener("wheel", handleScroll, {
      passive: false,
    });
  }
});

onUnmounted(() => {
  window.removeEventListener("scroll", handleScrollBg, false);
  if (scrollContainer.value) {
    scrollContainer.value.removeEventListener("wheel", handleScroll);
  }
});
</script>

<style lang="scss" scoped>
html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden; /* 禁用默认滚动 */
  scroll-behavior: smooth;
}

.scroll-container {
  min-height: 100vh;
  // overflow-x: hidden;
  // position: relative;
  // background-color: #df9d9d;
}

.scroll-content {
  will-change: transform;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}

</style>