What are some examples of variable scope in JavaScript?

What are some examples of variable scope in JavaScript?

In JavaScript, variable scope determines where a variable can be accessed. There are three main types: global, function, and block scope.

Can you give me an example of global scope?

Sure! A variable declared outside of any function is in the global scope. For example: var globalVar = 'I am global'; This variable can be accessed anywhere in your code.

What about function scope?

Function scope means that a variable is only accessible within the function it was declared in. For example: function myFunction() { var localVar = 'I am local'; } Here, localVar cannot be accessed outside of myFunction.

And block scope?

Block scope is created by using curly braces {}. Variables declared with let or const inside a block are not accessible outside of it. For example: if (true) { let blockVar = 'I am block scoped'; } Here, blockVar is not accessible outside the if statement.