我按照
我嘗試將單元格的位置更改為相對位置，將下拉選單的 z-index 切換為更高的值，但下拉選單仍位于第一列的后面。
這是一個 JSFiddle，帶有一個最小的、可重復的示例：https ://jsfiddle.net/maxencelav/hwsrcmL6/14/
顯示代碼片段
@import url("https://fonts.googleapis.com/css2?family=Fraunces:ital,wght@0,700;1,200&display=swap");
table {
font-family: "Fraunces", serif;
font-size: 125%;
white-space: nowrap;
margin: 3px;
border: none;
border-collapse: separate;
border-spacing: 0;
table-layout: fixed;
border: 1px solid black;
}
table td,
table th {
border: 1px solid black;
padding: 0.5rem 1rem;
}
table thead th {
padding: 3px;
position: sticky;
top: 0;
z-index: 1;
width: 25vw;
background: white;
}
table td {
background: #fff;
padding: 4px 5px;
text-align: center;
}
table tbody th {
font-weight: 100;
font-style: italic;
text-align: left;
position: relative;
}
table thead th:first-child {
position: sticky;
left: 0;
z-index: 2;
}
table tbody th {
position: sticky;
left: 0;
background: white;
z-index: 1;
}
caption {
text-align: left;
padding: 0.25rem;
position: sticky;
left: 0;
}
[role="region"][aria-labelledby][tabindex] {
width: 100%;
max-height: 98vh;
overflow: auto;
}
#team-cell-container {
display: grid;
grid-template-columns: 1fr auto;
align-items: center;
margin: 0;
gap: 5px;
}<script src="https://code.jquery.com/jquery-3.4.1.slim.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.js"></script>
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.css" rel="stylesheet" />
<!-- Based off https://css-tricks.com/a-table-with-both-a-sticky-header-and-a-sticky-first-column/ -->
<table>
<thead>
<tr>
<th>Teams</th>
<th>1</th>
<th>2</th>
<th>3</th>
<th>4</th>
<th>5</th>
<th>6</th>
<th>7</th>
<th>8</th>
<th>9</th>
<th>Runs</th>
</tr>
</thead>
<tbody>
<tr>
<th>
<div id="team-cell-container">
Milwaukee Brewers
<div class="dropdown">
<i class="fa fa-cog" type="button" id="dropdown-item" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"></i>
<div class="dropdown-menu" aria-labelledby="dropdown-item">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</div>
</div>
</th>
<td>2</td>
<td>1</td>
<td>4</td>
<td>0</td>
<td>3</td>
<td>1</td>
<td>1</td>
<td>0</td>
<td>1</td>
<td>13</td>
</tr>
<tr>
<th>Los Angles Dodgers</th>
<td>4</td>
<td>2</td>
<td>0</td>
<td>0</td>
<td>3</td>
<td>2</td>
<td>4</td>
<td>2</td>
<td>3</td>
<td>20</td>
</tr>
<tr>
<th>New York Mets</th>
<td>0</td>
<td>1</td>
<td>2</td>
<td>0</td>
<td>0</td>
<td>2</td>
<td>4</td>
<td>0</td>
<td>3</td>
<td>12</td>
</tr>
<tr>
<th>St. Louis Cardinals</th>
<td>3</td>
<td>4</td>
<td>1</td>
<td>3</td>
<td>2</td>
<td>4</td>
<td>3</td>
<td>2</td>
<td>3</td>
<td>25</td>
</tr>
</tbody>
</table>uj5u.com熱心網友回復：
這是 CSSposition 和 z-index. 這是由this question解釋的。（或查看我的測驗）。
要使position: absolutehighz-index出現在其他相對之上，您必須將z-index其他設定設定為低于z-index父 dropdown 。這證實了這個答案的作業。
首先，為您的表添加一些標識。
<!-- Based off https://css-tricks.com/a-table-with-both-a-sticky-header-and-a-sticky-first-column/ -->
<table id="my-table">
<thead>
<tr>
<th>Teams</th>
<th>1</th>
<th>2</th>
<th>3</th>
<th>4</th>
<th>5</th>
<th>6</th>
<th>7</th>
<th>8</th>
<th>9</th>
<th>Runs</th>
</tr>
</thead>
<tbody>
<tr>
<th>
<div id="team-cell-container">
Milwaukee Brewers
<div class="dropdown">
<i class="fa fa-cog" type="button" id="dropdown-item" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"></i>
<div class="dropdown-menu" aria-labelledby="dropdown-item">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</div>
</div>
</th>
<td>2</td>
<td>1</td>
<td>4</td>
<td>0</td>
<td>3</td>
<td>1</td>
<td>1</td>
<td>0</td>
<td>1</td>
<td>13</td>
</tr>
<tr>
<th>Los Angles Dodgers</th>
<td>4</td>
<td>2</td>
<td>0</td>
<td>0</td>
<td>3</td>
<td>2</td>
<td>4</td>
<td>2</td>
<td>3</td>
<td>20</td>
</tr>
<tr>
<th>New York Mets</th>
<td>0</td>
<td>1</td>
<td>2</td>
<td>0</td>
<td>0</td>
<td>2</td>
<td>4</td>
<td>0</td>
<td>3</td>
<td>12</td>
</tr>
<tr>
<th>St. Louis Cardinals</th>
<td>3</td>
<td>4</td>
<td>1</td>
<td>3</td>
<td>2</td>
<td>4</td>
<td>3</td>
<td>2</td>
<td>3</td>
<td>25</td>
</tr>
<tr>
<th>Houston Astros</th>
<td>3</td>
<td>2</td>
<td>1</td>
<td>4</td>
<td>2</td>
<td>3</td>
<td>1</td>
<td>3</td>
<td>1</td>
<td>20</td>
</tr>
<tr>
<th>Toronto Blue Jays</th>
<td>2</td>
<td>4</td>
<td>4</td>
<td>1</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>1</td>
<td>22</td>
</tr>
<tr>
<th>Boston Red Sox</th>
<td>4</td>
<td>4</td>
<td>4</td>
<td>0</td>
<td>3</td>
<td>0</td>
<td>0</td>
<td>1</td>
<td>1</td>
<td>17</td>
</tr>
<tr>
<th>Chicago Cubs</th>
<td>1</td>
<td>1</td>
<td>0</td>
<td>0</td>
<td>2</td>
<td>2</td>
<td>2</td>
<td>0</td>
<td>4</td>
<td>12</td>
</tr>
<tr>
<th>Philadelphia Phillies</th>
<td>0</td>
<td>4</td>
<td>2</td>
<td>0</td>
<td>4</td>
<td>1</td>
<td>0</td>
<td>4</td>
<td>2</td>
<td>17</td>
</tr>
<tr>
<th>Chicago White Sox</th>
<td>2</td>
<td>0</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>2</td>
<td>4</td>
<td>2</td>
<td>0</td>
<td>19</td>
</tr>
<tr>
<th>San Diego Padres</th>
<td>2</td>
<td>2</td>
<td>3</td>
<td>0</td>
<td>4</td>
<td>2</td>
<td>2</td>
<td>0</td>
<td>2</td>
<td>17</td>
</tr>
<tr>
<th>Cleveland Indians</th>
<td>1</td>
<td>0</td>
<td>0</td>
<td>3</td>
<td>2</td>
<td>1</td>
<td>3</td>
<td>1</td>
<td>0</td>
<td>11</td>
</tr>
<tr>
<th>San Francisco Giants</th>
<td>1</td>
<td>3</td>
<td>1</td>
<td>4</td>
<td>1</td>
<td>1</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>17</td>
</tr>
<tr>
<th>Cincinatti Reds</th>
<td>2</td>
<td>2</td>
<td>4</td>
<td>1</td>
<td>4</td>
<td>2</td>
<td>2</td>
<td>3</td>
<td>3</td>
<td>23</td>
</tr>
<tr>
<th>Minnesota Twins</th>
<td>4</td>
<td>4</td>
<td>1</td>
<td>0</td>
<td>2</td>
<td>0</td>
<td>3</td>
<td>1</td>
<td>3</td>
<td>18</td>
</tr>
<tr>
<th>Tampa Bay Rays</th>
<td>4</td>
<td>1</td>
<td>3</td>
<td>0</td>
<td>2</td>
<td>1</td>
<td>4</td>
<td>0</td>
<td>1</td>
<td>16</td>
</tr>
<tr>
<th>Miami Marlins</th>
<td>0</td>
<td>3</td>
<td>0</td>
<td>4</td>
<td>3</td>
<td>3</td>
<td>0</td>
<td>1</td>
<td>4</td>
<td>18</td>
</tr>
<tr>
<th>Oakland Athletics</th>
<td>3</td>
<td>3</td>
<td>2</td>
<td>0</td>
<td>4</td>
<td>2</td>
<td>0</td>
<td>1</td>
<td>0</td>
<td>15</td>
</tr>
<tr>
<th>Detroit Tigers</th>
<td>3</td>
<td>4</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>2</td>
<td>0</td>
<td>0</td>
<td>4</td>
<td>19</td>
</tr>
<tr>
<th>Pittsburgh Pirates</th>
<td>2</td>
<td>2</td>
<td>0</td>
<td>3</td>
<td>0</td>
<td>2</td>
<td>2</td>
<td>2</td>
<td>2</td>
<td>15</td>
</tr>
<tr>
<th>Seattle Mariners</th>
<td>1</td>
<td>3</td>
<td>3</td>
<td>1</td>
<td>2</td>
<td>2</td>
<td>0</td>
<td>4</td>
<td>0</td>
<td>16</td>
</tr>
<tr>
<th>Atlanta Braves</th>
<td>4</td>
<td>3</td>
<td>0</td>
<td>3</td>
<td>4</td>
<td>4</td>
<td>4</td>
<td>4</td>
<td>3</td>
<td>29</td>
</tr>
</tbody>
</table>
</div>
然后使用 Bootstrap下拉事件來監聽顯示或隱藏下拉元素。
$('#my-table .dropdown').on('show.bs.dropdown', (event) => {
let thisTable = event.target.closest('table');
thisTable.classList.add('dropdowns-opened');
// add class to all <tr>
$(thisTable).find('tr').addClass('non-dropdown');
// remove class of this <tr>
event.target.closest('tr').classList.remove('non-dropdown');
});
$('#my-table .dropdown').on('hidden.bs.dropdown', (event) => {
let thisTable = event.target.closest('table');
thisTable.classList.remove('dropdowns-opened');
$(thisTable).find('tr').removeClass('non-dropdown');
});
上面的 JavaScript 將在下拉元素顯示或隱藏時添加和洗掉類。
現在，添加一些 CSS 類以使下拉串列顯示在其他之上。
table.dropdowns-opened tbody tr.non-dropdown th {
z-index: 0;
}
在 JsFiddle 上查看它的實際效果。
如果粘性功能沒有按預期作業，您可能會更改您的當前z-index: 1to2并使用上面的類 from z-index: 0to 。1
轉載請註明出處，本文鏈接：https://www.uj5u.com/caozuo/448623.html
上一篇：如何將兩張卡片放在一起？
下一篇：回圈選擇選擇器選項