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

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

Global scope refers to variables that are accessible from anywhere in the code, while local scope refers to variables that are only accessible within a specific function or block.

Can you give me an example of each?

Sure! A global variable could be defined outside any function, like let x = 10;. A local variable would be defined inside a function, like function myFunction() { let y = 5; }.

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 because it's not defined in that scope.

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

Yes, it's generally best to minimize the use of global variables to avoid conflicts and maintain cleaner code. Use local variables whenever possible.