HTMLTableSectionElement: deleteRow() Methode

deleteRow(index)

<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>

table { border-collapse: collapse; } th, td { border: 1px solid black; } button { margin: 1em 1em 1em 0; }

// 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(); });