element-scroll-to/example.html at master · webmodules/element-scroll-to · GitHub

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<!DOCTYPE html>
<html>
<head>
  <title>Example</title>
  <script src="example.js"></script>
  <script>
    var scrollTo = example;
    function randomize() {
      var target = document.querySelector('.target');
      target.style.top = Math.round(Math.random() * 1000) + 'px';
      target.style.left = Math.round(Math.random() * 1000) + 'px';
    }
    function scroll() {
      var target = document.querySelector('.target');
      scrollTo(target);
    }
  </script>
  <style>
    .container {
      overflow: auto;
      margin: 40px;
      position: relative;
    }
    .target {
      width: 40px;
      height: 40px;
      background: black;
      position: absolute;
    }
    .bar {
      position: fixed;
      top: 0;
    }
  </style>
</head>
<body>
  <div class="container" style="background: red; width: 600px; height: 400px">
    <div class="container" style="background: blue; width: 800px; height: 600px">
      <div class="container" style="background: lime; width: 1000px; height: 800px">
        <div class="target"></div>
      </div>
    </div>
  </div>
  <div class="bar">
    <button onclick="randomize()">Randomize</button>
    <button onclick="scroll()">Scroll To</button>
  </div>
</body>
</html>