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scrollTop()

Last updated at Posted at 2017-09-05
scrollTop()

最初の要素の現在のスクロール上の上位置を取得します。
この関数は、要素の表示/非表示状態にかかわらず機能します。


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
                    "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
  <script src="/jquery/js/jquery.js"></script>

  <script>
  $(document).ready(function(){
    $('div').scroll(function(){
      $('#out').text('scrollTop: '+$(this).scrollTop());
    });
  });
  </script>
  <style>
  div {
    height: 80px;
    overflow: auto;
    border: 1px solid black;
  }
  </style>
</head>
<body>
  <p id="out">scrollTop: </p>
  <div>a<br/>b<br/>c<br/>d<br/>e<br/>f<br/>g<br/>h<br/>i<br/>j<br/></div>
</body>
</html>

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