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Deprecated
This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. Avoid using it and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The HTML <shadow> element—an obsolete part of the Web Components technology suite—was intended to be used as a shadow DOM insertion point. You might have used it if you have created multiple shadow roots under a shadow host. It is not useful in ordinary HTML.

Content categories Transparent content
Permitted content Flow content
Tag omission None, both the starting and ending tag are mandatory.
Permitted parents Any element that accepts flow content.
Permitted ARIA roles None
DOM interface HTMLShadowElement

Attributes

This element includes the global attributes.

Example

Here is a simple example of using the <shadow> element. It is an HTML file with everything needed in it.

Note: This is an experimental technology. For this code to work, the browser you display it in must support Web Components. See Enabling Web Components in Firefox.

<html>
  <head></head>
  <body>

  <!-- This <div> will hold the shadow roots. -->
  <div>
    <!-- This heading will not be displayed -->
    <h4>My Original Heading</h4>
  </div>

  <script>
    // Get the <div> above with its content
    var origContent = document.querySelector('div');
    // Create the first shadow root
    var shadowroot1 = origContent.createShadowRoot();
    // Create the second shadow root
    var shadowroot2 = origContent.createShadowRoot();

    // Insert something into the older shadow root
    shadowroot1.innerHTML =
      '<p>Older shadow root inserted by
          &lt;shadow&gt;</p>';
    // Insert into younger shadow root, including <shadow>.
    // The previous markup will not be displayed unless
    // <shadow> is used below.
    shadowroot2.innerHTML =
      '<shadow></shadow> <p>Younger shadow
       root, displayed because it is the youngest.</p>';
  </script>

  </body>
</html>

If you display this in a web browser it should look like the following.

shadow example

Specifications

This element is no longer defined by any specifications.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support35 No33 — 591 No26 No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support3737 No33 — 582 ? No Yes

1. From version 33 until version 59 (exclusive): this feature is behind the dom.webcomponents.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.

2. From version 33 until version 58 (exclusive): this feature is behind the dom.webcomponents.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.

See also

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