Baseline Widely available
HTMLTableRowElement
æ¥å£ç sectionRowIndex
åªè¯»å±æ§è¡¨ç¤ºå½åé¨åï¼<thead>
ã<tbody>
å <tfoot>
ï¼çè¡ä½ç½®ã
è¿å该è¡çç´¢å¼ï¼å¦æè¯¥è¡ä¸å±äºè¡¨çä¸é¨åï¼åè¿å -1
ã
æ¬ç¤ºä¾ä½¿ç¨ JavaScript æ 记表 tbody
ä¸çææè¡å·ã
<table>
<thead>
<tr>
<th>åå</th>
<th>ä»·æ ¼</th>
</tr>
</thead>
<tbody>
<tr>
<td>é¦è</td>
<td>$2</td>
</tr>
<tr>
<td>æ©å</td>
<td>$8</td>
</tr>
<tr>
<td>西å·çæ</td>
<td>$20</td>
</tr>
</tbody>
<tfoot>
<tr>
<td>æ»è®¡</td>
<td>$30</td>
</tr>
</tfoot>
</table>
JavaScript
const rows = document.querySelectorAll("tbody tr");
rows.forEach((row) => {
const z = document.createElement("td");
z.textContent = `(è¡ #${row.sectionRowIndex})`;
row.appendChild(z);
});
ç»æ è§è æµè§å¨å
¼å®¹æ§ åè§
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