jQuery Attribute Manipulation
3 Examples to add class by JavaScript (no jQuery)
jQuery addClass() Method - GeeksforGeeks
javascript - Add class to previous element using jquery - Stack Overflow
javascript - jQuery - addClass not adding class to html element - Stack Overflow
javascript - select elements in sequence (by group class name) - Stack Overflow
jQuery Add Remove and Toggle class - Dot Net Tutorials
jQuery How-to: Creating and Inserting New Element (Part 2) - Hongkiat
Dynamically Add and Remove HTML elements using jQuery
JavaScript Add Class (in 3 Ways)
How to add class to an element without addClass() method in jQuery ? - GeeksforGeeks
jQuery Add Remove and Toggle class - Dot Net Tutorials
How to add a class to an element using JavaScript - javatpoint
jQuery addClass() Method - GeeksforGeeks
jQuery How-to: Creating and Inserting New Elements (Part 1) - Hongkiat
JavaScript Get Element by Class Name
CSS manipulation
javascript - jQuery addClass not working on elements in an array - Stack Overflow
Jquery Add/Remove, switch style, fade in/out, show/hide
jQuery UI | addClass() Method - GeeksforGeeks
How to add <li> class to active and leave it after hover using jQuery ? - GeeksforGeeks
