What is the difference between closures and scope in JavaScript?

What is the difference between closures and scope in JavaScript?

Closures are functions that remember their outer variables even when the function is executed outside its original scope. Scope, on the other hand, refers to the visibility of variables in different parts of your code.

Can you give me an example of a closure?

Sure! Here's a simple example:

function outerFunction() {
    let outerVariable = 'I am outside!';
    function innerFunction() {
        console.log(outerVariable);
    }
    return innerFunction;
}

const closureFunction = outerFunction();
closureFunction(); // Outputs: I am outside!

How does scope affect variable accessibility?

Scope determines where variables can be accessed in your code. Variables defined in a function are not accessible outside of it, while global variables can be accessed anywhere.

What are the types of scope in JavaScript?

In JavaScript, there are two main types of scope: global scope and local scope. Local scope can be further divided into function scope and block scope.