HTMLSlotElement: assignedNodes() method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.
The assignedNodes()
method of the HTMLSlotElement
interface returns a sequence of the nodes assigned to this slot.
If the flatten
option is set to true
, it returns a sequence of both the nodes assigned to this slot, as well as the nodes assigned to any other slots that are descendants of this slot. If no assigned nodes are found, it returns the slot's fallback content.
Syntax
assignedNodes()
assignedNodes(options)
Parameters
Return value
An array of nodes.
Examples
The following snippet is taken from our slotchange example (See it live).
let slots = this.shadowRoot.querySelectorAll("slot");
slots[1].addEventListener("slotchange", (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 |
---|
HTML Standard # dom-slot-assignednodes-dev |
Browser compatibility
BCD tables only load in the browser