How to add class in existing class given element JavaScript?
4532
How to add a class to a given element?
34863
CSS Selector that applies to elements with two classes
158286
Dynamically Add to Javascript Object
119826
Detect element tag name by its class
37725
How do I add a DOM element with jQuery?
10826
how to change an element type using jquery
151032
Remove class= attribute
64597
How to get a JavaScript object's class?
127723
Gutenberg extend blocks add new class name
10857
getElementsByClassName produces error "undefined"
97756
How to add property to a class dynamically?
89879
addClass every nth
1933
How can I change an element's class with JavaScript?
111021
Add class based on published state
138999
Adding input elements dynamically to form
101258
Dynamically Adding/Removing CSS in Nested Div
54780
How can I add new array elements at the beginning of an array in Javascript?