HTMLSlotElement.assignedNodes()

The assignedNodes() property of the HTMLSlotElement interface returns the sequence of elements assigned to this slot or, alternatively, the slot's fallback content.

Syntax

var assignedNodes[] = HTMLSlotElement.assignedNodes([options])

Parameters

options Optional

An object that sets options for the nodes to be returned. The available options are:

• flatten: A Boolean indicating whether to return the elements assigned to the slot (if this value is false) or the slot's fallback content (if this value is true). The default is false.

Return value

An array of nodes.

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

Browser Compatibility