What is the difference between closure and scope in JavaScript?

What is the difference between closure and scope in JavaScript?

In JavaScript, scope refers to the visibility of variables, while closure is a function that retains access to its lexical scope.

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

How does scope affect variable accessibility?

Scope determines where variables can be accessed. Variables defined in a function are not accessible outside of it, creating a local scope.

What are the types of scope in JavaScript?

There are three main types of scope in JavaScript: global scope, function scope, and block scope.