含CSS与JS的视差页面在Safari正常运行但Chrome无法滚动求解

你遇到的Chrome下无法滚动、效果不生效的问题核心是两个逻辑错误：

1. DOM结构不符合视差滚动的规则：所有需要参与滚动监听、视差变换的元素都要放在.parallax容器内部，你当前代码里.p2、.p3、.p4全部放在了.parallax容器外，导致.parallax内部仅有一个高度等于视口的.p1元素，没有足够的滚动高度，自然无法触发滚动事件。
2. 滚动动画的操作对象错误：你监听的是.parallax的滚动事件，但是返回顶部逻辑里操作的是html和body的滚动距离，完全不匹配。

具体修改方案 #

1. 调整HTML结构 #

把所有<section class="p2">、<section class="p3">、<section class="p4">标签全部移动到<div class="parallax">的闭合标签之前，修改后结构如下：

<div class="parallax">
  <section class="p1 speed-1">
    <div class="logo-p1">
      <img src="https://www.google.com/logos/doodles/2021/doodle-champion-island-games-august-24-6753651837108999-s.png">
    </div>
  </section>
  <!-- p2、p3、p4全部移到parallax内部 -->
  <section class="p2">
    <div class="logo-p2">
      <img src="https://www.google.com/logos/doodles/2021/doodle-champion-island-games-august-24-6753651837108999-s.png">
    </div>
    <div class="p-main p2-text">
      <div>
        <p class="p-desc p2-desc"> <b>Lorem ipsum </b>dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis
          aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum..
        </p>
      </div>
    </div>
  </section>
  <section class="p3">
    <div class="logo-p3">
      <img src="https://www.google.com/logos/doodles/2021/doodle-champion-island-games-august-24-6753651837108999-s.png">
    </div>
    <div class="p-main p3-text">
      <div>
        <p class="p-desc p3-desc"> <b>Sed ut perspiciatis </b>unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem
          quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam
          eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit
          qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?
        </p>
      </div>
    </div>
  </section>
  <section class="p4">
    <div class="p-main p4-text">

    </div>
  </section>
</div>

2. 补充.parallax滚动高度 #

在CSS的.parallax规则里添加min-height: 3000px，确保滚动距离能覆盖你JS里设置的1800px触发阈值：

.parallax {
  perspective: 1px;
  height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
  position: static;
  background: rgba(255, 0, 0, 0);
  z-index: 2;
  min-height: 3000px; /* 新增该行 */
}

3. 修复返回顶部JS逻辑 #

把返回顶部代码里的滚动对象从html,body改成.parallax：

/// Scroll back to top
$("a[href='.parallax']").click(function() {
  $(".parallax").animate({ // 修改滚动对象
    scrollTop: 0
  }, "slow");
  return false;
});

4. 优化交互遮挡问题 #

在.p1.hide的CSS规则里添加pointer-events: none，避免透明元素挡住滚动操作：

.p1.hide {
  opacity: 0;
  transition: all 0.9s ease;
  visibility: hidden;
  pointer-events: none; /* 新增该行 */
}

可选优化：HTML里的<img>标签不需要闭合标签，删掉所有冗余的</img>即可符合语法规范。
修改完成后Chrome下即可正常滚动、触发对应的样式切换效果，同时不会影响Safari下的原有表现。

内容的提问来源于stack exchange，提问作者92-92