<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>css实现table表固定表头与列</title>
<style>
.wrap {
height: 500px;
width: 500px;
overflow: auto;
}
.table {
border-collapse: collapse;
}
.table td, .table th {
border: 1px solid #ccc;
padding: 4px 8px;
white-space: nowrap;
}
/* 固定表头 */
.table thead th {
background: #e3e5e8;
}
.table thead {
position: sticky;
top: 0;
/* 高于固定列是td的z-index防止，td压盖th */
z-index: 2;
/* .5px这里还没有弄明白原因，如果写1px的话会显得很粗 */
box-shadow: 0 -1px #ccc, 0 .5px #ccc;
}
/* 固定列 */
.table tbody td {
background: #fff;
}
.table thead th:first-child,
.table thead th:last-child {
z-index: 2;
}
.table tbody td:first-child,
.table tbody td:last-child {
z-index: 1;
}
.table thead th:first-child,
.table tbody td:first-child {
left: 0;
}
.table thead th:last-child,
.table tbody td:last-child {
/* 注意这里是1px，不是0，因为table与父容器之间有1px间隙，设置为0时会出现轻微的移动 */
right: 1px;
}
.table thead th:first-child,
.table thead th:last-child,
.table tbody td:first-child,
.table tbody td:last-child{
position: sticky;
filter: drop-shadow(1px 0 0 #ccc) drop-shadow(-1px 0 0 #ccc);
}
</style>
</head>
<body>
<div class="wrap">
<table class="table" id="resizeMe">
<thead id="thead"></thead>
<tbody id="tbody"></tbody>
</table>
</div>
<!-- 创建表格内容 -->
<script>
const thead = document.getElementById('thead')
const thr = document.createElement('tr')
const tbody = document.getElementById('tbody')
// 表头
for (let i = 0; i < 12; i++) {
const th = document.createElement('th')
th.innerText = `column ${i + 1}`
thr.appendChild(th)
}
thead.appendChild(thr)
for (let i = 0; i < 24; i++) {
const tbr = document.createElement('tr')
for (let j = 0; j < 12; j++) {
const td = document.createElement('td')
td.innerText = `内容 ${i + 1}-${j + 1}`
tbr.appendChild(td)
}
tbody.appendChild(tbr)
}
</script>
</body>
</html>
