Jquery add class

- Jquery add class remove class
- Jquery add class to label
- Jquery add class if not exists
- Jquery add class to all elements with class
- Jquery add class to all child elements
- Jquery add class and remove class on click
- Jquery add class to multiple elements
- Jquery add class multiple
- Jquery add class to html tag
- Jquery add class on click
- Jquery add class to div
- Jquery add class to body
- Jquery add class name
- Jquery add class to parent element
- Jquery add class by id