Is this an example of variable shadowing in JavaScript?

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That is also what is known as variable scope.

A variable only exists within its containing function/method/class, and those will override any variables which belong to a wider scope.

That’s why in your example, a euro sign will be shown, and not a dollar. (Because the currencySymbol containing the dollar is at a wider (global) scope than the currencySymbol containing the euro sign).

As for your specific question: Yes, that is a good example of variable shadowing.

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