Assignment Solutions - ES6

What is the error after running these codes:
const address = {
street: "15 Le Thanh Ton",
city: "Ho Chi Minh"
}

address.district = "1",
console.log(address.country);

A. No error
B. Assignment to constant variable
C. country is not defined
D. undefined

// A. No error

Choose the option(s) that will return 15 Le Thanh Ton, district 1, HCMC, Vietnam

getAddress({
city:"HCMC",
country: "VietNam",
address:{
   number:15,
   street:"Le Thanh Ton",
   district: "1"}
})

function getAddress(obj){
//YOUR CODE HERE
  return `${number} ${street}, ${district}, ${city} ${country}`;
}

Note: Choose all that applies.
A. const { city, country, address:{number, street, district}} = obj
B. const { city, country, number, street, district} = obj
C. const { city, country, address.number, address.street, address.district } = obj
D. const obj = { city, country, address:{number, street, district}}

// A.
const city, country, address:{number, street, district}} = obj

Add in a line of code so that getFoodItems().mango returns "mango".
function getFoodItems(){
const food = [
  ["carrots", "beans", "peas", "lettuce"],
  ["apples", "mangos", "ornges"],
  ["cookies", "cake", "pizza", "chocolate"]
];

const carrots = food[0][0];
const cookies = food[2][0];

//YOUR ANSWER HERE
//const [,[, mango, orange]] = food
const [[],[apple, mango]] = food
return {carrots, cookies, mango}
}

getFoodItems().mango

Note: Choose all that applies.
A. const [[],[apple, mango]] = food
B. const [,[, mango]] = food
C. const [,[, mango, orange]] = food
D. const [[], [mango]] = food

// A, B, C
const [[], [apple, mango]] = food;
const [, [, mango]] = food;
const [, [, mango, orange]] = food;

Which of the options below will return true?

function restParams(first,...rest) {
  console.log(rest);
  return rest[0] === 1 && rest[1] === 2;
}

A. restParams(0, 1, 2)
B. restParams([0, 1, 2])
C. restParams(0, [1, 2])
D. restParams(1, 2, 3)

// A. restParams(0, 1, 2)

Which of the options for the value of obj below will make isAdult(obj) return true?

function isAdult({name, address, ...rest}) {
  return rest.age >= 18;
}

A. { name : "Jon", address : "Earth", age : 30 }
B. { age : 30, address : "Earth", name : "Jon" }
C. { rest: { age : 30 } }
D. { age: 30 }

// A. { name : "Jon", address : "Earth", age : 30 }
// B. { age : 30, address : "Earth", name : "Jon" }
// D. { age: 30 }

Join the arrays with one of the options below. The expected result is [ 0, 1, 2, 3, 4, 5, 6].

function concatenateArray() {
  const arr1 = [0,1,2,3];
  const arr2 = [4,5,6];
  //YOUR CODE HERE
  return result;
}

A. const result = arr1 + arr2
B. const result = [...arr1, ...arr2]
C. const result = arr1 + [...arr2]
D. const result = [arr1, ...arr2]

B. const result = [...arr1, ...arr2]

Create Bran's Brother "Robb Stark" with the options below.
Note that the only difference is their first names and it must stay that way.

Note: Choose all that applies.

const personA = {
  firstName:"Bran",
  lastName: "Stark",
  gender:"male",
  house:"Stark",
  father:"Eddard Stark",
  mother: "Catelyn Tully"
}

A. const personB = { ...personA, firstName: "Robb"}
B. const personB = personA; personB.firstName = "Robb"
C. const personB = {...personA}; personB.firstName = "Robb"
D. const personB = { firstName: "Robb", ...personA }

// A. const personB = { ...personA, firstName: "Robb"}
// C. const personB = {...personA}; personB.firstName = "Robb"