HTMLTableCellElement:cellIndex 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 cellIndex
只读属性表示单元格在其所在行(<tr>
)中的位置。第一个单元格的索引是 0
。
值
返回单元格的索引,或如果单元格不属于任何行,则返回 -1
。
示例
此示例为 tbody
中第一行的所有单元格编号添加标签。
HTML
html
<table>
<thead>
<tr>
<th>商品</th>
<th>价格</th>
</tr>
</thead>
<tbody>
<tr>
<td>香蕉</td>
<td>$2</td>
</tr>
<tr>
<td>大米</td>
<td>$2.5</td>
</tr>
</tbody>
</table>
JavaScript
js
const rows = document.querySelectorAll("tbody tr");
const cells = rows[0].cells;
for (const cell of cells) {
cell.textContent = `${cell.textContent}(单元格 #${cell.cellIndex})`;
}
结果
规范
Specification |
---|
HTML Standard # dom-tdth-cellindex |
浏览器兼容性
BCD tables only load in the browser