HTML <div> id Attribute

The id attribute on a <div> tag assigns an identifier to the content division element. The identifier must be unique across the page.

Example

#

A unique id attribute on a <div> element.

Paul Gauguin

Eugène Henri Paul Gauguin, was a French Post-Impressionist artist. Unappreciated until after his death, Gauguin is now recognized for his experimental use of color and Synthetist style that were distinct from Impressionism. Toward the end of his life, he spent ten years in French Polynesia. The paintings from this time depict people or landscapes from that region.

<div id="gaugain">
  <h4>Paul Gauguin</h4>
  <p>
    Eugène Henri Paul Gauguin, was a French Post-Impressionist artist. 
    Unappreciated until after his death, Gauguin is now recognized for 
    his experimental use of color and Synthetist style that were 
    distinct from Impressionism. Toward the end of his life, he 
    spent ten years in French Polynesia. The paintings from this 
    time depict people or landscapes from that region.</p>
</div>

Using id

The id attribute assigns an identifier to the <div> element.

The identifier must be unique across the page.

The id allows programmatic access to the <div> element.

Tip:  id is a global attribute that can be applied to any HTML element.


Syntax

<div id="identifier" >

Values

#

Value Description
identifier A unique alphanumeric string. The id value must begin with a letter ([a-z]) and may be followed by any number of letters, digits ([0-9]), hyphens (-), underscores (_), colons (:), and periods (.).

More Examples

A <div> tag with a unique id.
Clicking the button will display the element's content.

Paul Gauguin

Eugène Henri Paul Gauguin, was a French Post-Impressionist artist. Unappreciated until after his death, Gauguin is now recognized for his experimental use of color and Synthetist style that were distinct from Impressionism. Toward the end of his life, he spent ten years in French Polynesia. The paintings from this time depict people or landscapes from that region.


<div id="mydiv">
  <h4>Paul Gauguin</h4>
  <p>
    Eugène Henri Paul Gauguin, was a French Post-Impressionist artist. 
    Unappreciated until after his death, Gauguin is now recognized for 
    his experimental use of color and Synthetist style that were 
    distinct from Impressionism. Toward the end of his life, he 
    spent ten years in French Polynesia. The paintings from this 
    time depict people or landscapes from that region.
  </p>
</div>

<br />  
<button onclick="show();">Show div content</button>

<script>
  let show = () => {
    let element = document.getElementById("mydiv");
    alert("Content = " + element.innerHTML);
  }
</script>

Code explanation

The id attribute assigns a unique identifier to the div.

Clicking the button calls JavaScript which locates the div using the id.

Finally, the content of the div is displayed in an alert box.


Browser support

Here is when id 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

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