Function

`function aun() {

// x = 20;

return x();

function x() { console.log('xx'); }

}

let aa = aun();

console.log(aun());

function Person() {

this.name = 'az';

}

Person();

console.log(name);

let [num1, ...num2] = [1, 2, 3];

console.log(num1, num2);`