This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The HTMLSlotElement interface of the Shadow DOM API defines the location of a slot.

Returns or sets the slot name. A slot is a placeholder inside a web component that users can fill with their own markup.


Returns the sequence of elements assigned to this slot or alternatively the slots fallback content..


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

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 53.0 No support No support ? No support
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support 53.0 No support ? ? ? ? 53.0
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API HTMLSlotElement Interface Reference shadow dom