HTMLSlotElement: name property

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 name property of the HTMLSlotElement interface returns or sets the slot name. A slot is a placeholder inside a web component that users can fill with their own markup.

Value

A string.

Examples

The following snippet is taken from our slotchange example (See it live).

js
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.