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Detailed explanation of the scroll code that slides a div to the bottom

小云云Original: 2017-12-21 09:41:462116browse

scroll is also a very useful tag. This article will share with you a scroll example code for judging p to slide to the bottom. It has a good reference value and I hope it can help everyone.

The example is as follows:

<!DOCTYPE html>
<html>
<head>
  <title>判断p滑到底部的代码</title>
  <script type="text/javascript" src="jquery-3.1.0.min.js"></script>
  <style type="text/css">
    #scrollTest{
      width:100px;
      height:100px;
      overflow-y: auto;//当p中y方向的内容溢出时，y轴分别显示滚动条
      border:1px solid red;
    }
  </style>
</head>
<body>
  <p id="scrollTest">
    <table>
      <tr>
        <td>111</td>
        <td>222</td>
      </tr>
      <tr>
        <td>111</td>
        <td>222</td>
      </tr>
      <tr>
        <td>111</td>
        <td>222</td>
      </tr>
      <tr>
        <td>111</td>
        <td>222</td>
      </tr>
      <tr>
        <td>111</td>
        <td>222</td>
      </tr>
      <tr>
        <td>111</td>
        <td>222</td>
      </tr>
      <tr>
        <td>111</td>
        <td>222</td>
      </tr>
    </table>
  </p>
</body>
</html>
<!--//事先得引入jQuery文件-->
<script type="text/javascript">
  $("#scrollTest").scroll(function(){
    var h = $(this).height();//p可视区域的高度
    var sh = $(this)[0].scrollHeight;//滚动的高度，$(this)指代jQuery对象，而$(this)[0]指代的是dom节点
    var st =$(this)[0].scrollTop;//滚动条的高度，即滚动条的当前位置到p顶部的距离
    if(h+st>=sh){
    //上面的代码是判断滚动条滑到底部的代码
      //alert("滑到底部了");
      $("#scrollTest").append(111+"<br>");//滚动条滑到底部时，只要继续滚动滚动条，就会触发这条代码.一直滑动滚动条，就一直执行这条代码。
    }
  })
</script>

Everyone should have a deeper understanding of scroll after reading this article If you know it, hurry up and give it a try.

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