Can you explain variable scope in JavaScript?

Can you explain variable scope in JavaScript?

Sure! Variable scope refers to the accessibility of variables in different parts of your code. In JavaScript, there are three main types of scope: global, function, and block scope.

What is global scope?

Global scope means that a variable is accessible from anywhere in your code. If you declare a variable outside of any function, it has global scope.

And what about function scope?

Function scope means that a variable is only accessible within the function it was declared in. Once the function execution is complete, the variable is no longer accessible.

Can you give me an example of block scope?

Certainly! Block scope is created by using curly braces, like in if statements or loops. Variables declared with let or const inside a block are only accessible within that block.