Obviously. IDs are for element identification, which means uniqueness. Classes are for, well, classes of elements. Querying the entire DOM for an element through classes when you can simply use IDs is a waste of time and resources. Just use IDs when you need to target one very specific element; otherwise, when targeting a class of elements, use classes (the names are so self-descriptive, why is it still being discussed?).
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
Obviously. IDs are for element identification, which means uniqueness. Classes are for, well, classes of elements. Querying the entire DOM for an element through classes when you can simply use IDs is a waste of time and resources. Just use IDs when you need to target one very specific element; otherwise, when targeting a class of elements, use classes (the names are so self-descriptive, why is it still being discussed?).