This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
The mode
read-only property of the ShadowRoot
returns the mode (either "open
" or "closed
") with which a ShadowRoot
was created.
When the mode
of a shadow root is "closed
", the shadow root’s implementation internals are inaccessible and unchangeable from JavaScript—in the same way the implementation internals of, for example, the <video>
element are inaccessible and unchangeable from JavaScript.
Syntax
var mode = shadowRoot.mode
Value
Either "open
" or "closed
".
Specifications
Specification | Status | Comment |
---|---|---|
DOM The definition of 'ShadowRoot.mode' in that specification. |
Living Standard |
Browser compatibility
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|---|
Basic support | 53 | No support[1] | No support[2] | No support | 40 | 10 |
Feature | Android | Edge | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | 53 | No support[1] | No support[2] | No support | 40 | 10.1 |
[1] This feature is not implemented yet. See the Edge platform status.
[2] This feature is not implemented yet. See bug 1205323.