const obj = { one: 1, two: 2 }; for (const key in obj) { console.log('value', obj[key]); } //object.keys(), Object.values(), Object.entries() const user ={ name: 'John', age: 29 }; Object.keys(user).includes("age"); Object.keys(user).map(key => user[key]); // You can replace all the previous code that is written by using the Object.values()method Object.values(user) // If you console log this you get the same results as the code above. //get the monthly total of all the expenses const monthlyExpenses = { food: 400, rent: 1700, insurance: 550, internet: 49, phone: 95 }; // This is how you would get the total monthly cost of expenses useing Objects and the reduced function. const total = Object.values(monthlyExpenses).reduce((acc, expense) => acc + expense , 0); // Object.entries give you the array of arrays. It is splitting up the arrays and giving them back to you. console.log(total) console.log(values); console.log(ageExists);