DOMStringMap
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
DOMStringMap 接口用于 HTMLElement.dataset / SVGElement.dataset 属性，表示添加到元素的自定义属性的数据。
规范
| Specification |
|---|
| HTML # embedding-custom-non-visible-data-with-the-data-*-attributes:domstringmap-3 |