HTML isn’t compiled, and unknown attributes are allowed. The best practice is to prefix non-standard attributes with data- (e.g. <div data-foo="test">) but nothing enforces that. Custom attributes can be retrieved in JavaScript or targeted in CSS rules.
HTML isn’t compiled, and unknown attributes are allowed. The best practice is to prefix non-standard attributes with
data-(e.g.<div data-foo="test">) but nothing enforces that. Custom attributes can be retrieved in JavaScript or targeted in CSS rules.