HTML slot global attribute

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 slot global attribute assigns a slot in a shadow DOM shadow tree to an element: An element with a slot attribute is assigned to the slot created by the <slot> element whose name attribute's value matches that slot attribute's value. You can have multiple elements assigned to the same slot by using the same slot name. Elements without a slot attribute are assigned to the unnamed slot, if one exists.

For examples, see our Using templates and slots guide.