HTMLTableSectionElement: deleteRow() method
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 deleteRow() method of the HTMLTableSectionElement interface removes a specific row (<tr>) from the given table sectioning element (<thead>, <tfoot>, or <tbody>).
Syntax
js
deleteRow(index)
Parameters
Return value
None (undefined).
Exceptions
IndexSizeErrorDOMException-
Thrown if
indexis greater than or equal to the number of rows or smaller than-1.
Examples
In this example, two buttons allow you to add and remove rows from the table body section; it also updates an <output> element with the number of rows currently in the table.
HTML
html
<table>
<thead>
<tr>
<th>Col 1</th>
<th>Col 2</th>
<th>Col 3</th>
</tr>
</thead>
<tbody>
<tr>
<td>X</td>
<td>Y</td>
<td>Z</td>
</tr>
</tbody>
</table>
<button id="add">Add a row</button>
<button id="remove">Remove last row</button>
<div>This table's body has <output>1</output> row(s).</div>
JavaScript
js
// Obtain relevant interface elements
const bodySection = document.querySelectorAll("tbody")[0];
const rows = bodySection.rows; // The collection is live, therefore always up-to-date
const rowNumberDisplay = document.querySelectorAll("output")[0];
const addButton = document.getElementById("add");
const removeButton = document.getElementById("remove");
function updateRowNumber() {
rowNumberDisplay.textContent = rows.length;
}
addButton.addEventListener("click", () => {
// Add a new row at the end of the body
const newRow = bodySection.insertRow();
// Add cells inside the new row
["A", "B", "C"].forEach(
(elt) => (newRow.insertCell().textContent = `${elt}${rows.length}`),
);
// Update the row counter
updateRowNumber();
});
removeButton.addEventListener("click", () => {
// Delete the row from the body
bodySection.deleteRow(-1);
// Update the row counter
updateRowNumber();
});
Result
Specifications
| Specification |
|---|
| HTML # dom-tbody-deleterow |