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.

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