Combines data-* properties into one object, so that it is easier (less verbose) to specify
them. When this object is serialized to HTML element, each property name is converted to
dash-style and prefixed with the data- string. The values are always converted to strings
according to the following rules:
Combines
aria-*properties into one object, so that it is easier (less verbose) to specify them. When this object is serialized to HTML element, each property name is converted to dash-style and prefixed with thearia-string. The values are always converted to strings according to the following rules: