Javascript Closures

A Javascript closure is when an inner function is inside of an outer function (a function inside a function). The inside function has access to

1. Variables defined in the outer function
2. Argument passed into the outer function

var CreateExample= function(example){
                                    return function(text){
                                              console.log(example +" "+ text);
                                       }
};


var example1= CreateExample("Hi");
var example2= CreateExample("Hello");

example1("test one");   //Hi test one
example2("test two");  //Hello test two.

In most object oriented languages like java/c#, when you reach return all variables declared inside that function get destroyed and memory is freed up.

IN javascript, when creating a closure and return as function, all local variable will remain in memory and accessible.