Function addClass

addClass($element: Element, className: string): void
Add a CSS class name to an element.
Parameters
- $element: Element
  A DOM element to check.
- className: string
  A class to add to the DOM element.
Returns void
Example
```
addClass($element, 'another-class')
```
Deprecated
Use element.classList.add(className). Will be removed in goldies 6.0.
- Defined in dom/classes.ts:28