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JavaScript DOM Scripting By Example Adding and Removing Names Removing Names

1 Answer

Steven Parker
Steven Parker
224,936 Points

The "ul" in the handler is not the same variable, it is a new variable with a scope limited to the conditional block it is created in.

Now the global one may contain a reference to the same element, so it could be used instead, but acquiring all the references by traversal in the handler is more of a "best practice". It could avoid future trouble if someone modifying the global code was not aware that the handler code relied on it.