addClass(node, className) adds CSS classes to an element from a
string or array; no-ops on empty input. A string is split by
whitespace via tokenList before being passed
to classList.add(...tokens); an array is spread directly. The
inverse is removeClass. Part of
pota/use/dom.
| Argument | Type | Description |
|---|---|---|
node |
Element |
The element to add classes to. |
className |
string | string[] |
Space-separated string or array of class tokens. |