What is the difference between local and global scope in programming?

Can you explain the difference between local and global scope in programming?

Sure! Local scope refers to variables that are defined within a function and can only be accessed inside that function. Global scope, on the other hand, refers to variables that are defined outside of any function and can be accessed from anywhere in the code.

Can you give me an example of each?

Of course! For local scope, if you have a variable defined inside a function like function myFunc() { let localVar = 5; }, localVar can only be used within myFunc(). For global scope, if you define a variable like let globalVar = 10; outside any function, you can access globalVar from anywhere in your code.

What happens if I try to access a local variable outside its function?

If you try to access a local variable outside its function, you'll get an error saying that the variable is not defined, because it's not accessible outside its local scope.

Are there any best practices for using local and global variables?

Yes! It's generally best to use local variables whenever possible to avoid conflicts and unintended side effects. Use global variables sparingly, as they can make your code harder to debug and maintain.