Loops and Functions

Question 1

Write a for loop that counts to 50 by 5.

Answer 1

for (i = 0; i < 51; i += 5){
console.log(i)
}

Question 2

What are the three parts needed for a for loop?

Answer 2

1. ) Initialization
2. ) Stopping condition
3. ) Iteration statement

Question 3

Write a for in loop that console logs each of the values in the following object.
let pet = { 
name: "Finn", 
breed: "Shiba Inu", 
age: 2, 
goodBoy: true 
};

Answer 3

let pet = { 
name: "Finn", 
breed: "Shiba Inu", 
age: 2, 
goodBoy: true 
};
for (item in pet) {
  console.log(pet[item])
}

Question 4

How do you invoke or call this function?
function hi( ) {
console.log('Hello')
}

Answer 4

hi( )

Question 5

Write and invoke a function that counts down from 10 to 0.

Answer 5

function countDown( ) {
  for (i = 10; i >= 0; i--)
  console.log(i)
}
countDown( )

Question 6

Write a for in loop that console logs each item in the following array.
let seasons = ['spring', 'summer', 'autumn', 'winter'];

Answer 6

let seasons = ['spring', 'summer', 'autumn', 'winter'];
for (s in seasons){
  console.log(seasons[s])
}

Question 7

Write a function that accepts the parameter food and console logs “My favorite food is …” using the parameter.

Answer 7

function favFood(food){
  console.log(`My favorite food is ${food}.`)
}
favFood('sushi')

Question 8

Write a function that takes in the parameters crust, sauce, cheese, and topping to build a pizza. Have the function console log your pizza order.

Answer 8

function pizza(crust, sauce, cheese, topping){
  console.log(`I would like a pizza with ${crust} crust, ${sauce}, ${cheese}, and ${topping}.`)
}
pizza('thin', 'marinara', 'mozarella', 'olives')

Question 9

What does the keyword “Return” do?

Answer 9

It brings data out of the function to make it accessible in a wider scope.

Question 10

In the following for loop what is i = 1?

for (i = 1; i <= 10; i++) {
console.log(i)
}

Answer 10

The initialization

In this case it set the variable of i to 1 initially

Question 11

In the following for loop what is i <= 10?

for (i = 1; i <= 10; i++) {
console.log(i)
}

Answer 11

The stopping condition

In this case the for loop will not stop until is is no longer less than or equal to 10

Question 12

In the following for loop what is i++?

for (i = 1; i <= 10; i++) {
console.log(i)
}

Answer 12

The iteration statement

In this case it is saying that the variable i will be incremented by one each time to loop runs.

Question 13

For the following array write a for of loop that console logs “Super Mario” before each of the items.

let games = [64, “Sunshine”, “Galaxy”, “Odyssey”];

Answer 13

let games = [64, “Sunshine”, “Galaxy”, “Odyssey”];

for (game of games) {
console.log(“Super Mario”, game)
}