What is block scoping in JavaScript?

What is block scoping in JavaScript?

Block scoping in JavaScript refers to the visibility of variables within a block of code, such as within curly braces {}.

How does it differ from function scoping?

Function scoping allows variables to be accessible within the entire function, while block scoping restricts access to the block.

Can you give me an example of block scoping?

Sure! Using 'let' or 'const' inside a block limits the variable's scope to that block. For example:

if (true) {
    let x = 10;
}
console.log(x); // This will throw an error because x is not defined outside the block.

What are the benefits of using block scoping?

Block scoping helps prevent variable collisions and makes code easier to read and maintain by limiting variable visibility.