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.
The DOMStringMap interface is used for the HTMLElement.dataset attribute, to represent data for custom attributes added to elements.
Specifications
| Specification |
|---|
| HTML # embedding-custom-non-visible-data-with-the-data-*-attributes:domstringmap-3 |