data-* SVG attributes are called custom data attributes. They let SVG markup and its resulting DOM share information that standard attributes can't, usually for scripting purposes. Their custom data are available via the
SVGElement interface of the element the attributes belong to, with the
* can be replaced by any characters allowed in XML's rules for names, with the following restrictions:
- Can't start with
- No semicolons (
- No capital
SVGElement.dataset property is a
DOMStringMap that provides the attribute
SVGElement.dataset.testValue. Hyphen characters (
U+002D) are removed and the next letter is capitalized, resulting in the camelCase format.
You can use this attribute with any SVG element.
|Scalable Vector Graphics (SVG) 2
The definition of 'data-*' in that specification.
|Candidate Recommendation||Custom data attributes are new in SVG 2.|
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