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Author : Jaydatt Patel

Closure consept :

In JavaScript, a closure is created when a function accesses variables outside

of its immediate lexical scope.

The closure retains a reference to the environment in which it was created,

allowing the function to access and manipulate variables in that environment,

even after the outer function has returned.

A closure allows variables to be accessed outside of their scope, while a scope chain determines the accessibility of variables within nested scopes.

console.log("-------------Program-1---------------");

let a = "Global";

function outerPrint() {

let b = "OuterPrint";

return function innerPrint() {

let c = "innerPrint";

return `${a} -> ${b} -> ${c}`;

};

}

const inner = outerPrint();

console.log("inner : ", inner);

const value = inner();

console.log("value : ", value);

console.log("-------------Program-2---------------");

function generateID(num) {

let id = num;

//return function

return function createID() {

return `A_2023_${id++}`;

};

}

const func = generateID(99);

console.log(func()); //Output : A_2023_99

console.log(func()); // Output: A_2023_100