HTML <video> data-* Attribute

The data-* attribute on a <video> tag attaches additional data to the video control. To create a custom attribute, replace the * with a lowercase string, such as data-id, data-status, or data-location.

Example

#

A custom data-title attribute on a <video>.
The attribute value is not visible, but is readable by JavaScript.

<video data-title="Bucky Bunny" width="320" height="240" controls>
  <source src="/media/movie.mp4" type="video/mp4">
  <source src="/media/movie.ogg" type="video/ogg">
</video>

Using data-*

The data-* attribute adds custom information to a <video> element.

The * part is replaced with a lowercase string, such as data-id, data-volume, data-breed, etc.

An <video> 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 video control.


Syntax

<video data-*="value">

Note: The * can be any string, such as data-iddata-costdata-supplier,  etc.


Values

#

Value Description
value A string value. Can be numeric, alphanumeric, JSON, etc.

More Examples

A data-rating attribute on a <video> tag.
Clicking the button will display the rating for the video.



<video id="myvideo" data-rating="All audiences" width="320" height="240" controls>
  <source src="/media/movie.mp4" type="video/mp4">
  <source src="/media/movie.ogg" type="video/ogg">
</video>

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

<script>
  let show = () => {
     let element = document.getElementById("myvideo");
     alert("Rating = " + element.getAttribute('data-rating'));
  }
</script>

Code explanation

The <video> tag contains a custom data-rating attribute.

The data-rating value stores the title of the video file.

Button clicks are handled by the onclick event.

Onclick invokes a JavaScript function that extracts and displays the <video> rating.


Browser support

Here is when data-* support started for each browser:

Chrome
4.0 Jan 2010
Firefox
3.5 Jun 2009
IE/Edge
9.0 Sep 2012
Opera
10.5 Mar 2010
Safari
4.0 Jun 2009

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