A data-* attribute on a <td> tag attaches additional data to the table data cell.
To create a custom attribute, replace * with a lowercase string, such as data-id, data-status, or data-location.
A custom data-id attribute on several <td> tags.
The attribute values are not visible, but they are readable by JavaScript.
| Full name |
|---|
| Denice Hobermann |
| Paulo Cornell |
| Jane Hollander |
<style>
table.tb { width:300px; border-collapse: collapse; }
.tb th, .tb td { border: solid 1px #777; padding: 5px; }
.tb th {background-color: lightblue; text-align: center; }
</style>
<table class="tb">
<tr>
<th>Full name</th>
</tr>
<tr>
<td data-id="105">Denice Hobermann</td>
</tr>
<tr>
<td data-id="250">Paulo Cornell</td>
</tr>
<tr>
<td data-id="252">Jane Hollander</td>
</tr>
</table>
The data-* attribute adds custom information to a <td> element.
The * part is replaced with a lowercase string, such as data-id, data-cost, or data-location.
An <td> element can have any number of data-* attributes, each with their own name.
Using data-* attributes reduces the need for requests to the server.
Note: The data-* attribute is not visible and does not change the appearance of the td.
<td data-*="value">
Note: The * can be any string, such as data-id, data-cost, data-supplier, etc.
| Value | Description |
|---|---|
| value | A string value. Can be numeric, alphanumeric, JSON, etc. |
A custom data-id attribute on each <td> element.
Clicking a data cell will display the customer id value.
| Customer |
|---|
| Denice Hobermann |
| Paulo Cornell |
| Jane Hollander |
<style>
table.tb { width:300px; border-collapse: collapse; }
.tb th, .tb td { border: solid 1px #777; padding: 5px; }
.tb th {background-color: lightblue; text-align: center; }
</style>
<table class="tb">
<tr>
<th>Customer</th>
</tr>
<tr>
<td data-id="105" onclick="show(this);">Denice Hobermann</td>
</tr>
<tr>
<td data-id="250" onclick="show(this);">Paulo Cornell</td>
</tr>
<tr>
<td data-id="252" onclick="show(this);">Jane Hollander</td>
</tr>
</table>
<script>
let show = element => {
alert("Customer Id = " + element.getAttribute('data-id'));
}
</script>
The <td> tag has a custom data-id attribute.
The data-id attribute is used to specify the id of the customer.
Clicks are handled by the onclick event.
Onclick invokes a JavaScript function that extracts and displays the <td> id.
Note: Notice how the id displays immediately without server call.
Here is when data-* support started for each browser:
 Chrome
|
1.0 | Sep 2008 |
 Firefox
|
1.0 | Sep 2002 |
 IE/Edge
|
1.0 | Aug 1995 |
 Opera
|
1.0 | Jan 2006 |
 Safari
|
1.0 | Jan 2003 |
Back to <td>
