Add class to ancestor of current item with jquery
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Reliable way to get the "ancestor" of an object with a specific classname, using jQuery
1933
How can I change an element's class with JavaScript?
89879
addClass every nth
47535
Toggling only a single class as active in a list with vanilla JS or CSS
92070
How can I add a class to a block with code (development)
69087
Add CSS rule via jQuery for future created elements
131454
CSS :selected pseudo class similar to :checked, but for  elements
142159
Add & remove active class from a navigation link
100588
JQuery: find child elements from an existing selector
32999
How do I add a class to the HTML "body" tag programmatically?
47916
Get class list for element with jQuery
117290
How to delete hierarchy along with the object to which it is parented
112038
How to determine the current widget's parent container (sidebar widget id)
13651
Select current element in jQuery
42575
jquery selector unable to find visible last-child
74541
Change CSS class properties with jQuery
128166
Updating inherited property