javascript 滚动到JS视图

carvr3hs 于 2023-02-02 发布在 Java

关注(0)|答案(3)|浏览(142)

我有一个HTML代码，有一个大表。我需要滚动访问所有的行。
我做了thead作为一个粘性标签。因为我到处都需要这个标签。（position: sticky; top: 0;）
但是，当我想在JavaScript中使用firstCell.scrollIntoView();时，firstCell将被thead覆盖！
您可以在this link中看到该示例
在本例中，Target是表中的第一个cell，单击该按钮必须滚动到Target的视图中
但是Target将位于thead的背面
如何解决此问题？

JavaScript

来源：https://stackoverflow.com/questions/71093516/scroll-into-view-in-js

3条答案

按热度按时间

2izufjch1#

由于thead具有粘性位置，因此在计算可用空间时不会考虑其大小。
解决方法是使用scrollIntoView({ behavior: 'smooth', block: 'end' })代替scrollIntoView()。
这仅仅是因为thead的高度等于tr的高度，所以如果它将滚动条对齐到底部，它将不再被覆盖。

赞(0）回复(0）举报 2023-02-02

os8fio9y2#

滚动到视图后，通过getBoundingClientRect s检查头部底部是否与目标顶部重叠，如果是，则通过差值调用window.scrollBy。

const headTr = document.querySelector('thead tr');
document.querySelector('button').addEventListener('click', () => {
  const target = document.getElementById('target');
  target.scrollIntoView();
  const diff = target.getBoundingClientRect().top - target.getBoundingClientRect().bottom;
  if (diff < 0) {
    window.scrollBy(0, diff);
  }
});

<button style="position: fixed; top: 5px; right: 5px;">ScrollIntoView (for Target)</button>
<table>
  <thead>
    <tr style='position: sticky; top: 0;'>
      <td>XYZ</td>
      <td>XYZ</td>
      <td>XYZ</td>
      <td>XYZ</td>
      <td>XYZ</td>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td id=target style="color: red;">Target</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    <tr>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
      <td>abc</td>
    </tr>
    </tr>
  </tbody>
</table>

赞(0）回复(0）举报 2023-02-02

t2a7ltrp3#

我也遇到过同样的问题，但是我发现了一个带有CSS的article solving this issue。在我的例子中，这更容易实现和处理。
如果你把scroll-margin-top附加到一个标签上，当scrollIntoView()被调用时，它会自动给那个元素添加边距。

#target{
  scroll-margin-top: 1rem;
}

<!DOCTYPE html>
<html lang="en">
<head>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <meta http-equiv="X-UA-Compatible" content="ie=edge">
      <title>Document</title>
</head>
<body>
      <button onclick="document.getElementById('target').scrollIntoView();" style="position: fixed; top: 5px; right: 5px;">ScrollIntoView (for Target)</button>
      <table>
            <thead>
                  <tr style='position: sticky; top: 0;'>
                        <td>XYZ</td>
                        <td>XYZ</td>
                        <td>XYZ</td>
                        <td>XYZ</td>
                        <td>XYZ</td>
                  </tr>
            </thead>
            <tbody>
                  <tr>
                        <td id=target style="color: red;">Target</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
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                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
                  <tr>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                        <td>abc</td>
                  </tr>
            </tbody>
      </table>
</body>
</html>

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