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Start your free trialJinjia Lin
11,942 PointsWhy is "up" and "remove" not in upper case? (like "BUTTON"?)
when we use event.target.tagName, we have to put it in caps?
but why is it not the case for event.target.className?
Thank you for enlightening me.
1 Answer
Steven Parker
231,236 PointsTag names are stored internally in upper case, so they must always be compared with all upper case to match.
But class names are stored exactly as they are used in the code, so they must be compared with the same case.