HTMLTableRowElement: rowIndex property
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.
The rowIndex read-only property of the HTMLTableRowElement interface
represents the position of a row within the whole <table>.
Even when the <thead>, <tbody>, and
<tfoot> elements are out of order in the HTML, browsers render the
table in the right order. Therefore the rows count from <thead> to
<tbody>, from <tbody> to
<tfoot>.
Value
The index of the row, or -1 if the row is not part of a table.
Examples
This example uses JavaScript to label all the row numbers in a table.
HTML
html
<table>
<thead>
<tr>
<th>Item</th>
<th>Price</th>
</tr>
</thead>
<tbody>
<tr>
<td>Bananas</td>
<td>2ドル</td>
</tr>
<tr>
<td>Oranges</td>
<td>8ドル</td>
</tr>
<tr>
<td>Top Sirloin</td>
<td>20ドル</td>
</tr>
</tbody>
<tfoot>
<tr>
<td>Total</td>
<td>30ドル</td>
</tr>
</tfoot>
</table>
JavaScript
js
const rows = document.querySelectorAll("tr");
rows.forEach((row) => {
const z = document.createElement("td");
z.textContent = `(row #${row.rowIndex})`;
row.appendChild(z);
});
Result
[フレーム]
Specifications
| Specification |
|---|
| HTML # dom-tr-rowindex-dev |
Browser compatibility
Loading...