An id on a <section> tag assigns an identifier to the section.
The identifier must be unique across the page.
An id attribute on a <section> element.
The Night Watch (Dutch: De Nachtwacht), is a 1642 painting by Rembrandt van Rijn. It is in the collection of the Amsterdam Museum but is prominently displayed in the Rijksmuseum (State Museum) as the best-known painting in its collection. The Night Watch is the most famous Dutch Golden Age painting.
<section id="nigth-watch">
<h2>The Night Watch</h2>
<p>
The Night Watch (Dutch: De Nachtwacht), is a 1642
painting by Rembrandt van Rijn. It is in the collection
of the Amsterdam Museum but is prominently displayed
in the Rijksmuseum (State Museum) as the best-known
painting in its collection. The Night Watch is
the most famous Dutch Golden Age painting.
</p>
</section>
The id attribute assigns an identifier to the <section> element.
The id allows JavaScript to easily access the <section> 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.
<section id="identifier" />
| Value | Description |
|---|---|
| identifier | A unique alphanumeric string. The id value must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens (-), underscores (_), colons (:), and periods (.). |
A <section> element with a unique id.
Clicking the button will display the content of the element.
The Night Watch (Dutch: De Nachtwacht), is a 1642 painting by Rembrandt van Rijn. It is in the collection of the Amsterdam Museum but is prominently displayed in the Rijksmuseum (State Museum) as the best-known painting in its collection. The Night Watch is the most famous Dutch Golden Age painting.
<section id="mysection">
<h2>The Night Watch</h2>
<p>The Night Watch (Dutch: De Nachtwacht), is a 1642
painting by Rembrandt van Rijn. It is in the collection
of the Amsterdam Museum but is prominently displayed
in the Rijksmuseum (State Museum) as the best-known
painting in its collection. The Night Watch is
the most famous Dutch Golden Age painting.
</p>
</section>
<br />
<button onclick="show();">Show section content</button>
<script>
let show = () => {
let element = document.getElementById("mysection");
alert("Content = " + element.innerHTML);
}
</script>
The id attribute assigns a unique identifier for the <section>.
Clicking the button calls JavaScript which locates the <section> using the id.
Finally, the content of the <section> 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 <section>
