The HTMLSlotElement
interface of the Shadow DOM API enables access to the name and assigned nodes of an HTML <slot>
element.
Properties
HTMLSlotElement.name
DOMString
: Can be used to get and set the slot's name.
Methods
HTMLSlotElement.assignedNodes()
- Returns a sequence of the nodes assigned to this slot, and if the
flatten
option is set totrue
, the assigned nodes of any other slots that are descendants of this slot. If no assigned nodes are found, it returns the slot's fallback content. HTMLSlotElement.assignedElements()
- Returns a sequence of the elements assigned to this slot (and no other nodes). If the
flatten
option is set totrue
, it also returns the assigned elements of any other slots that are descendants of this slot. If no assigned nodes are found, it returns the slot's fallback content.
Events
slotchange
- Fired on an
HTMLSlotElement
instance (<slot>
element) when the node(s) contained in that slot change.
Examples
The following snippet is taken from our slotchange example (see it live also).
let slots = this.shadowRoot.querySelectorAll('slot'); slots[1].addEventListener('slotchange', function(e) { let nodes = slots[1].assignedNodes(); console.log('Element in Slot "' + slots[1].name + '" changed to "' + nodes[0].outerHTML + '".'); });
Here we grab references to all the slots, then add a slotchange event listener to the 2nd slot in the template — which is the one that keeps having its contents changed in the example.
Every time the element inserted in the slot changes, we log a report to the console saying which slot has changed, and what the new node inside the slot is.
Specifications
Specification | Status | Comment |
---|---|---|
HTML Living Standard The definition of 'HTMLSlotElement' in that specification. |
Living Standard |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
HTMLSlotElement | Chrome Full support 53 | Edge Full support 79 | Firefox
Full support
63
| IE No support No | Opera Full support 40 | Safari Full support 10.1 | WebView Android Full support 53 | Chrome Android Full support 53 | Firefox Android
Full support
63
| Opera Android Full support 41 | Safari iOS Full support 10.3 | Samsung Internet Android Full support 6.0 |
assignedElements | Chrome Full support 65 | Edge Full support 79 | Firefox Full support 66 | IE No support No | Opera Full support Yes | Safari ? | WebView Android Full support 65 | Chrome Android Full support 65 | Firefox Android Full support 66 | Opera Android Full support Yes | Safari iOS ? | Samsung Internet Android Full support 9.0 |
assignedNodes | Chrome Full support 53 | Edge Full support 79 | Firefox
Full support
63
| IE No support No | Opera Full support 40 | Safari Full support 10.1 | WebView Android Full support 53 | Chrome Android Full support 53 | Firefox Android
Full support
63
| Opera Android Full support 41 | Safari iOS Full support 10.3 | Samsung Internet Android Full support 6.0 |
name | Chrome Full support 53 | Edge Full support 79 | Firefox
Full support
63
| IE No support No | Opera Full support 40 | Safari Full support 10.1 | WebView Android Full support 53 | Chrome Android Full support 53 | Firefox Android
Full support
63
| Opera Android Full support 41 | Safari iOS Full support 10.3 | Samsung Internet Android Full support 6.0 |
slotchange event | Chrome Full support 53 | Edge Full support 79 | Firefox
Full support
63
| IE No support No | Opera Full support 40 | Safari Full support 10.1 | WebView Android Full support 53 | Chrome Android Full support 53 | Firefox Android
Full support
63
| Opera Android Full support 41 | Safari iOS Full support 10.3 | Samsung Internet Android Full support 6.0 |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- User must explicitly enable this feature.
- User must explicitly enable this feature.