HTMLTableCellElement:rowSpan 属性
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
HTMLTableCellElement
接口的 rowSpan
只读属性表示此单元格必须跨越的行数;这允许单元格在表格的多行之间占据空间。它反映 rowSpan
属性。
值
一个表示行数的正数。如果是 0
,则表示该列中所有剩余行。
备注:当设置新值时,任何不是 0 的值会被钳制到最接近的严格正数。
示例
示例提供了两个按钮来修改主体第一个单元格的行跨度。
HTML
html
<table>
<thead>
<tr>
<th>列 1</th>
<th>列 2</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>1</td>
</tr>
<tr>
<td rowspan="2">2</td>
<td>2</td>
</tr>
<tr>
<td>3</td>
<td>3</td>
</tr>
<tr>
<td>4</td>
<td>4</td>
</tr>
</tbody>
</table>
<button id="increase">增加列跨度</button>
<button id="decrease">减少列跨度</button>
<div>第一个列的第二个单元格跨越<output> 2 </output>行。</div>
JavaScript
js
// 获取相关接口元素
const row = document.querySelectorAll("tbody tr")[1];
const cell = row.cells[0];
const output = document.querySelectorAll("output")[0];
const increaseButton = document.getElementById("increase");
const decreaseButton = document.getElementById("decrease");
increaseButton.addEventListener("click", () => {
cell.rowSpan = cell.rowSpan + 1;
// 更新显示
output.textContent = ` ${cell.rowSpan} `;
});
decreaseButton.addEventListener("click", () => {
cell.rowSpan = cell.rowSpan - 1;
// 更新显示
output.textContent = `${cell.rowSpan == 0 ? "所有剩余的" : " " + cell.rowSpan + " "}`;
});
结果
规范
Specification |
---|
HTML Standard # dom-tdth-rowspan |
浏览器兼容性
BCD tables only load in the browser