我正在尝试使用导航栏和表格。表格又长又宽，因此它需要在 x 和 y 上都可以滚动。
我在 stackoverflow 上看到了其他答案，但我无法为我的网站做同样的事情。
我不确定自定义 CSS 是否被正确使用。 该表取 self 在网上找到的示例。导航标题工作正常并保持在顶部。但是表格标题没有，当我向下滚动时它会消失。
table thead tr th {
background-color: white !important;
position: sticky !important;
top: -1px !important;
}<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="/stylesheets/empdetails/custom.css" />
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<title>EmpDetails</title>
<script>
// some custom scripts
</script>
</head>
<body>
<nav class="navbar navbar-expand-md fixed-top navbar-dark bg-dark">
<a class="navbar-brand" href="#">EmpDetails</a>
<form class="form-inline" action="javascript:update();">
<input class="form-control mx-3 ml-4" type="search" id="name" name="name" placeholder="Employee Name" aria-label="Search">
<button class="btn btn-outline-success bg-success mx-3 text-light" type="submit">Search</button>
</form>
<button class="btn btn-outline-info bg-info mx-3 text-light" onclick="download();">Download</button>
</nav>
<br>
<br>
<br>
<div class="table-responsive" style="overflow-x:auto;">
<table id="table" class="table table-hover">
<thead>
<tr>
<th>column1</th>
<th>column2</th>
<th>column3</th>
<th>column4</th>
</tr>
</thead>
<tbody>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
<tr>
<td>td</td>
<td>td</td>
<td>td</td>
<td>td</td>
</tr>
</tbody>
</table>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<link rel="stylesheet" href="/stylesheets/empdetails/custom.css" />
</body>
</html>我尝试了来自 here 的解决方案我想我做得不对。知道我做错了什么。
最佳答案
您可以像这样在表头元素上放置一个固定位置:
thead {
position: fixed;
}
这应该使您的列固定在顶部
关于javascript - 在 bootstrap 4 中使用导航栏时如何使表头固定，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/57419919/