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// Hazrat Ali

// University Of Scholars

// array vs object

var shoppingItems = ['books', 'sunglass', 'shoes', 'pen'];

var friendsAge = [12, 45, 78, 12, 32, 14];

var friendsAge = {

rahim: 12,

samad: 45,

karim: 78,

jamal: 12,

robi:32,

kazi: 14

}

// object looping

var shoppingCart = {

books: 3,

sunglass: 1,

keyboard: 5,

mouse: 1,

pen: 25,

shoes: 2

}

const keys = Object.keys(shoppingCart);

console.log(keys);

const values = Object.values(shoppingCart);

console.log(values);

// var keys = [ 'books', 'sunglass', 'keyboard', 'mouse', 'pen', 'shoes' ];

for(var i = 0; i < keys.length; i++){

var propertyName = keys[i];

var propertyValue = shoppingCart[propertyName];

// console.log(propertyName, propertyValue);

}

// for in loop

for(var propertyName in shoppingCart){

const value = shoppingCart[propertyName];

console.log(propertyName, value);

}