HTMLTableSectionElement: deleteRow() method

The deleteRow() method of the HTMLTableSectionElement interface removes a specific row (<tr>) from a given <section>.

Syntax

js
deleteRow(index)

Parameters

index

index is an integer representing the row that should be deleted. However, the special index -1 can be used to remove the very last row of the section.

Return value

None (undefined).

Exceptions

IndexSizeError DOMException

Thrown if index is 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 a <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>

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 Standard
# dom-tbody-deleterow

Browser compatibility

BCD tables only load in the browser

See also