This article needs a technical review. How you can help.

The property reflects the select attribute. It is a DOMString containing a space-separated list of CSS selectors that select the content to insert in place of the <content> element.

Syntax = "CSSselector CSSselector ...";


// Select <h1> elements and elements with class="error" = "h1 .error";


Specification Status Comment
Shadow DOM
The definition of 'content' in that specification.
Working Draft  

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 35 28 (28) [1] Not supported 26 Not supported
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support 37 28.0 (28) [1] Not supported ? ?

[1] If Shadow DOM is not enabled in Firefox, <content> elements will behave like HTMLUnknownElement. Shadow DOM was first implemented in Firefox 28 and is behind a preference, dom.webcomponents.enabled, which is disabled by default.

See also

Document Tags and Contributors

 Contributors to this page: fscholz, markg
 Last updated by: fscholz,