What is block scope in ES6?

Can you explain what block scope is in ES6?

Sure! Block scope in ES6 refers to the visibility of variables declared within a block, such as inside curly braces {}.

How does it differ from function scope?

In function scope, variables are accessible within the entire function, while block scope restricts access to the block only.

Can you give me an example of block scope?

Of course! If you declare a variable using let inside an if statement, it won't be accessible outside that if.

What happens if I use var instead of let?

Using var would make the variable function-scoped, meaning it would be accessible throughout the entire function, not just the block.