A function scope is in a way also a block scope, so let and constwould behave the same way they did in our previous examples. However, function scopes also encapsulate variables declared with var .

The SCOPE Act also requires providers to ban targeted advertising, require parental consent for financial transactions, and block access to content related to suicide, substance abuse and grooming.

i.e. intuitively it looks like the variable will only be available within the block but it is accessible outside the block .. in javascript's case, because var doesn't make a block level ...