What are the differences between lexical scope and global scope?

What are the differences between lexical scope and global scope?

Lexical scope refers to the visibility of variables based on their location within the source code, while global scope means variables are accessible from anywhere in the code.

Can you give me an example of lexical scope?

Sure! In JavaScript, if you define a variable inside a function, it can only be accessed within that function, demonstrating lexical scope.

And how does global scope work?

Global scope allows variables to be accessed from any part of the code, including inside functions, unless shadowed by a local variable.

What are the implications of using global scope?

Using global scope can lead to variable collisions and make debugging harder, as any part of the code can modify global variables.

Is it better to use lexical scope over global scope?

Yes, it's generally better to use lexical scope to avoid unintended side effects and maintain cleaner, more manageable code.