laravel dca-admin grid表格的表头固定如何实现

可以使用一些CSS技巧来实现表头固定，例如使用CSS的position属性将表头固定在页面顶部，或者使用JavaScript来实现表头跟随滚动条滚动。以下是一些示例代码：

1. 使用CSS position属性实现表头固定

<div class="table-container">
  <table class="table">
    <thead>
      <tr>
        <th>Column 1</th>
        <th>Column 2</th>
        <th>Column 3</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>Row 1, Column 1</td>
        <td>Row 1, Column 2</td>
        <td>Row 1, Column 3</td>
      </tr>
      <tr>
        <td>Row 2, Column 1</td>
        <td>Row 2, Column 2</td>
        <td>Row 2, Column 3</td>
      </tr>
      ...
    </tbody>
  </table>
</div>

<style>
.table-container {
  overflow-x: auto;
  max-width: 100%;
  position: relative;
}

.table {
  width: max-content;
}

thead th {
  position: sticky;
  top: 0;
  background: #fff;
}
</style>

2. 使用JavaScript实现表头跟随滚动条滚动

<div class="table-container">
  <table class="table">
    <thead>
      <tr>
        <th>Column 1</th>
        <th>Column 2</th>
        <th>Column 3</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>Row 1, Column 1</td>
        <td>Row 1, Column 2</td>
        <td>Row 1, Column 3</td>
      </tr>
      <tr>
        <td>Row 2, Column 1</td>
        <td>Row 2, Column 2</td>
        <td>Row 2, Column 3</td>
      </tr>
      ...
    </tbody>
  </table>
</div>

<script>
const tableContainer = document.querySelector('.table-container');
const table = document.querySelector('.table');
const tableHeader = table.querySelector('thead');

tableContainer.addEventListener('scroll', () => {
  tableHeader.style.transform = `translateY(${tableContainer.scrollTop}px)`;
});
</script>