slot
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.
slot 全局属性 将一个 shadow DOM shadow 树中的槽分配给一个元素：带有 slot 属性的元素分配给由 <slot> 创建的槽，它的 name 属性的值匹配 slot 属性的值。
规范
| Specification |
|---|
| HTML Standard # attr-slot |
| DOM Standard # ref-for-dom-element-slot① |
浏览器兼容性
BCD tables only load in the browser