Practical CSS: simplifying UI code with pseudo-classes

"Using CSS pseudo-classes to manage states like 'empty' or 'single item' can significantly reduce the complexity of JavaScript code, which often becomes cluttered with presentation logic."

"By leveraging pseudo-classes, developers can simplify their UI code, allowing JavaScript to focus solely on behavior, thus enhancing maintainability and clarity."

CSS pseudo-classes can effectively manage UI states such as 'empty', 'single item', or 'show/hide controls' in a tag-input widget. By utilizing these pseudo-classes, developers can reduce the amount of class toggling in JavaScript, which often complicates the code with unnecessary presentation logic. This approach allows JavaScript to concentrate on behavior rather than presentation, leading to cleaner and more maintainable code in user interface interactions.

Read at Rubyflow