An id on a <footer> tag assigns an identifier to the footer.
The identifier must be unique across the page.
An id attribute on a <footer>.
<footer id="footer-copyright">
<p>© Company, Ltd. All Rights Reserved.</p>
</footer>
The id attribute assigns an identifier to the <footer> element.
The id allows JavaScript to easily access the <footer> element.
It is also used to point to a specific id selector in a style sheet.
Tip: id is a global attribute that can be applied to any HTML element.
<footer id="identifier" />
| Value | Description |
|---|---|
| identifier | A unique alphanumeric string. The id value must begin with a letter ([aside-Zaside-z]) and may be followed by any number of letters, digits ([0-9]), hyphens (-), underscores (_), colons (:), and periods (.). |
A <footer> element with a unique id.
Clicking the button displays the content of the element.
<footer id="myfooter">
<p>© Company, Ltd. All Rights Reserved.</p>
</footer>
<br/>
<button onclick="show();">Show footer content</button>
<script>
let show = () => {
let footer = document.getElementById("myfooter");
alert("Content = " + footer.innerHTML);
}
</script>
The id attribute assigns a unique identifier for the <footer> element.
Clicking the button calls JavaScript which locates the <footer> using the id.
Finally, the content of the <footer> element is displayed in an alert box.
Here is when id support started for each browser:
 Chrome
|
6.0 | Sep 2010 |
 Firefox
|
4.0 | Mar 2011 |
 IE/Edge
|
9.0 | Mar 2011 |
 Opera
|
11.1 | Mar 2011 |
 Safari
|
5.0 | Jun 2010 |
Back to <footer>
