What are the different scopes in programming functions?

What are the different scopes in programming functions?

In programming, scopes define the visibility and lifetime of variables. The main types are global, local, and block scope.

Can you explain local scope with an example?

Sure! In local scope, variables are accessible only within the function they are declared. For example:

function myFunction() {
    let localVar = 'I am local';
    console.log(localVar);
}
myFunction(); // Outputs: I am local
console.log(localVar); // Error: localVar is not defined

What about global scope?

Global scope means that a variable is accessible from anywhere in the code. For example:

globalVar = 'I am global';
function anotherFunction() {
    console.log(globalVar);
}
anotherFunction(); // Outputs: I am global
console.log(globalVar); // Outputs: I am global

Are there any other types of scopes?

Yes, there's also block scope, which is defined by curly braces {}. Variables declared with let or const inside a block are not accessible outside of it.