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 a given <section>.
Syntax
js
deleteRow(index)
Parameters
index-
indexis an integer representing the row that should be deleted. However, the special index-1can be used to remove the very last row of the section.
Return value
None (undefined).
Exceptions
IndexSizeErrorDOMException-
Thrown if
indexis greater than or equal to the number of available rows or is a negative value other 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>
<th>Col 1</th>
<th>Col 2</th>
<th>Col 3</th>
</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>
table {
border-collapse: collapse;
}
th,
td {
border: 1px solid black;
}
button {
margin: 1em 1em 1em 0;
}
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
[フレーム]
Specifications
| Specification |
|---|
| HTML # dom-tbody-deleterow |
Browser compatibility
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