How do I declare global variables in programming?

What is the best way to declare global variables in my code?

To declare global variables, you typically define them outside of any function. This way, they can be accessed from anywhere in your code.

Can you give me an example in Python?

Sure! In Python, you can declare a global variable like this:

my_global_var = 10

def my_function():
    global my_global_var
    my_global_var += 5

What about in JavaScript?

In JavaScript, you can declare a global variable using the var, let, or const keyword outside of any function:

var myGlobalVar = 10;

function myFunction() {
    myGlobalVar += 5;
}

Are there any downsides to using global variables?

Yes, global variables can lead to code that is harder to debug and maintain, as they can be modified from anywhere in your code.