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原生js写数据自动纵向滚动，鼠标移入后停止滚动可手动滚动，鼠标移出转自动

news 2025/7/27 0:36:26

<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>滚动页面</title><link rel="stylesheet" href="styles.css"><style>body,html {margin: 0;padding: 0;overflow: hidden;}#scrollContainer {width: 100%;height: 100vh;overflow: hidden;position: relative;}#scrollContent {display: flex;flex-direction: column;transition: transform 0.3s ease;}.item {width: 100%;height: 100vh;display: flex;justify-content: center;align-items: center;font-size: 5em;color: white;}.item:nth-child(odd) {background-color: #333;}.item:nth-child(even) {background-color: #666;}</style>
</head><body><div id="scrollContainer"><div id="scrollContent"><div class="item">1</div><div class="item">2</div><div class="item">3</div><div class="item">4</div><div class="item">5</div></div></div>
</body><script>const scrollContainer = document.getElementById('scrollContainer');const scrollContent = document.getElementById('scrollContent');let currentPosition = 0;let intervalId = null;const scrollDistance = 2;const itemHeight = scrollContent.clientHeight / scrollContent.children.length;const maxScrollPosition = 0;const minScrollPosition = -itemHeight * (scrollContent.children.length - 1);function autoScroll() {if (currentPosition <= minScrollPosition) {currentPosition = 0;}scrollContent.style.transform = `translateY(${currentPosition}px)`;currentPosition -= scrollDistance;}function startAutoScroll() {intervalId = setInterval(autoScroll, 20);}function stopAutoScroll() {clearInterval(intervalId);}function handleWheel(event) {currentPosition -= event.deltaY;if (currentPosition > maxScrollPosition) {currentPosition = maxScrollPosition;} else if (currentPosition < minScrollPosition) {currentPosition = minScrollPosition;}scrollContent.style.transform = `translateY(${currentPosition}px)`;}scrollContainer.addEventListener('mouseenter', function () {stopAutoScroll();scrollContainer.addEventListener('wheel', handleWheel);});scrollContainer.addEventListener('mouseleave', function () {scrollContainer.removeEventListener('wheel', handleWheel);startAutoScroll();});startAutoScroll();
</script></html>

初始化变量（currentPosition、intervalId、scrollDistance、itemHeight、maxScrollPosition、minScrollPosition），用于跟踪滚动状态和动画。
autoScroll()函数持续地将scrollContent向上移动（translateY），直到达到minScrollPosition，然后重置。
startAutoScroll()和stopAutoScroll()函数通过setInterval和clearInterval控制自动滚动动画。
handleWheel(event)函数根据鼠标滚轮事件（wheel）调整currentPosition，确保滚动保持在maxScrollPosition和minScrollPosition定义的范围内。
scrollContainer上的事件监听器（mouseenter、mouseleave）触发自动滚动停止/开始，并启用/禁用通过鼠标滚轮进行手动滚动。
在mouseenter时，自动滚动停止，并且可以通过鼠标滚轮进行手动滚动。
在mouseleave时，手动滚动停止，并且自动滚动恢复。
#scrollContent中的每个项目占满视口高度，页面可以通过自动或手动方式平滑滚动这些项目。