每个元素的滚动速度不同

Question

我正在尝试创建视差效果，我需要帮助。如何减慢页面上不同元素的滚动速度？我还应该补充一点，我已经下载了 skrollr，但即使在他们的教程中也没有找到任何提及滚动速度的内容。

谢谢

Answer 1

没有直接的方法可以影响网站的滚动速度。这是由浏览器和操作系统本身指导的。有一些方法可以通过设置内容滚动来伪造它，如jsfiddle 所示。

如果您的目标是简单的视差效果，w3schools 有一个great demo/tutorial。

我认为您正在寻找像this 这样的效果。您可以通过 CSS 转换来做到这一点。

  .parallax {
    height: 500px; /* fallback for older browsers */
    height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-perspective: 300px;
    perspective: 300px;
  }

  .parallax__group {
    position: relative;
    height: 500px; /* fallback for older browsers */
    height: 100vh;
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
  }

  .parallax__layer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
  }
  
  .parallax__group {
    -webkit-transition: -webkit-transform 0.5s;
    transition: transform 0.5s;
  }

  .parallax__layer--fore {
    -webkit-transform: translateZ(90px) scale(.7);
    transform: translateZ(90px) scale(.7);
    z-index: 1;
  }

  .parallax__layer--base {
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    z-index: 4;
  }

  .parallax__layer--back {
    -webkit-transform: translateZ(-300px) scale(2);
    transform: translateZ(-300px) scale(2);
    z-index: 3;
  }

  .parallax__layer--deep {
    -webkit-transform: translateZ(-600px) scale(3);
    transform: translateZ(-600px) scale(3);
    z-index: 2;

<div class="parallax">
    <div id="group1" class="parallax__group">
      <div class="parallax__layer parallax__layer--base">
        <div class="title">Base Layer</div>
      </div>
    </div>
    <div id="group2" class="parallax__group">
      <div class="parallax__layer parallax__layer--base">
        <div class="title">Base Layer</div>
      </div>
      <div class="parallax__layer parallax__layer--back">
        <div class="title">Background Layer</div>
      </div>
    </div>
    <div id="group3" class="parallax__group">
      <div class="parallax__layer parallax__layer--fore">
        <div class="title">Foreground Layer</div>
      </div>
      <div class="parallax__layer parallax__layer--base">
        <div class="title">Base Layer</div>
      </div>
    </div>
    <div id="group4" class="parallax__group">
      <div class="parallax__layer parallax__layer--base">
        <div class="title">Base Layer</div>
      </div>
      <div class="parallax__layer parallax__layer--back">
        <div class="title">Background Layer</div>
      </div>
      <div class="parallax__layer parallax__layer--deep">
        <div class="title">Deep Background Layer</div>
      </div>
    </div>
    <div id="group5" class="parallax__group">
      <div class="parallax__layer parallax__layer--fore">
        <div class="title">Foreground Layer</div>
      </div>
      <div class="parallax__layer parallax__layer--base">
        <div class="title">Base Layer</div>
      </div>
    </div>
    <div id="group6" class="parallax__group">
      <div class="parallax__layer parallax__layer--back">
        <div class="title">Background Layer</div>
      </div>
      <div class="parallax__layer parallax__layer--base">
        <div class="title">Base Layer</div>
      </div>
    </div>
    <div id="group7" class="parallax__group">
      <div class="parallax__layer parallax__layer--base">
        <div class="title">Base Layer</div>
      </div>
    </div>
  </div>