Global scope
- Variables defined outside of a function are in the global scope
- Global scope lives as long as your application lives
- Variables in the global scope can be accessed from everywhere on the application
Local scope
- Variables defined inside a function are in local scope
- Local Scope lives as long as your functions are called and executed.
- Each function when invoked creates a new scope.
Lexical scope
- Lexical Scope means that in a nested function (function within a function), the inner functions have access to the variables and resources of their parent function.
function outer() {
let a = 323;
function inner() {
console.log(a);
}
inner()
}
outer();