HTMLTableElement: insertRow() 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 insertRow() method of the HTMLTableElement interface inserts a new row (<tr>) in a given <table>, and returns a reference to the new row.
If a table has multiple <tbody> elements, by default, the new row is inserted into the last <tbody>. To insert the row into a specific section, use HTMLTableSectionElement.insertRow()
Note: insertRow() inserts the row directly into the table. The row does not need to be appended separately as would be the case if Document.createElement() had been used to create the new <tr> element.
Syntax
insertRow() insertRow(index) HTMLTableElement is a reference to an HTML <table> element.
Parameters
indexOptional-
The row index of the new row. If
indexis-1or equal to the number of rows, the row is appended as the last row. Ifindexis omitted it defaults to-1.
Return value
An HTMLTableRowElement that references the new row.
Exceptions
IndexSizeErrorDOMException-
Thrown if
indexis greater than the number of rows.
Examples
This example uses insertRow(-1) to append a new row to a table.
We then use HTMLTableRowElement.insertCell() to insert a new cell in the new row. (To be valid HTML, a <tr> must have at least one <td> element.) Finally, we add some text to the cell using Document.createTextNode() and Node.appendChild().
HTML
<table id="my-table"> <tr> <td>Row 1</td> </tr> <tr> <td>Row 2</td> </tr> <tr> <td>Row 3</td> </tr> </table> JavaScript
function addRow(tableID) { // Get a reference to the table let tableRef = document.getElementById(tableID); // Insert a row at the end of the table let newRow = tableRef.insertRow(-1); // Insert a cell in the row at index 0 let newCell = newRow.insertCell(0); // Append a text node to the cell let newText = document.createTextNode("New bottom row"); newCell.appendChild(newText); } // Call addRow() with the table's ID addRow("my-table"); Result
Specifications
| Specification |
|---|
| HTML # dom-table-insertrow-dev |
Browser compatibility
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