What are Closures in Javascript

Closure is one of the favourite question to be asked in an frontend interview so how can you answer it perfectly such that interviewer is impressed

Let's understand what is a closure first

In layman terms closure is bundling of 2 functions where inner function has access to methods and properties of outer function even after execution of outer function is done .

another Defination "closure is defined as function bundled with it's lexical scope forms a closure"

function named(name){
  return function mixed(){
    return "hello"+name
  }
}

console.log(named("sagar")())

function x(a) {
function y(b) {
function z(c) {
return a + b + c;
};
return z;
}
return y;
}
// the outer function accepts an argument and returns a function
const a = x(10);
// the inner function also accepts an argument and returns the total of both
// outer and inner argument
let b = a(20);
let c = b(30);
console.log(c);

in this, the inner function has access to the outer function’s arguments and can use it for each instance it is created.

closures are important this can act as my starting point .

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