HTMLTableCellElement: colSpan property
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 colSpan
read-only property of the HTMLTableCellElement
interface represents the number of columns this cell must span; this lets the cell occupy space across multiple columns of the table. It reflects the colspan
attribute.
Value
A positive number representing the number of columns.
Note: When setting a new value, the value is clamped to the nearest strictly positive number.
Examples
This example provides two buttons to modify the column span of the first cell of the body.
HTML
html
<table>
<thead>
<tr>
<th>Col 1</th>
<th>Col 2</th>
<th>Col 3</th>
<th>Col 4</th>
<th>Col 5</th>
<th>Col 6</th>
<th>Col 7</th>
<th>Col 8</th>
</tr>
</thead>
<tbody>
<tr>
<td colspan="2">1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
</tr>
</tbody>
</table>
<button id="increase">Increase colspan</button>
<button id="decrease">Decrease colspan</button>
<div>The first cell spans <output>2</output> column(s).</div>
JavaScript
js
// Obtain relevant interface elements
const cell = document.querySelectorAll("tbody tr td")[0];
const output = document.querySelectorAll("output")[0];
const increaseButton = document.getElementById("increase");
const decreaseButton = document.getElementById("decrease");
increaseButton.addEventListener("click", () => {
cell.colSpan = cell.colSpan + 1;
// Update the display
output.textContent = cell.colSpan;
});
decreaseButton.addEventListener("click", () => {
cell.colSpan = cell.colSpan - 1;
// Update the display
output.textContent = cell.colSpan;
});
Result
Specifications
Specification |
---|
HTML Standard # dom-tdth-colspan |
Browser compatibility
BCD tables only load in the browser