JavaScript Arrays

Question 1

True or False: You can change the contents of a const array

Answer 1

True

Question 2

True or False: You cannot reassign a new array of different value

Answer 2

True

Question 3

How do you return the number of items in an array?

Answer 3

.length

Question 4

What does the .push() method do?

Answer 4

It’s a built-in JavaScript method that can add items to the end of an array

Question 5

True or False: using the .push() method will change the original array

Answer 5

True

Question 6

What does the .pop() method do?

Answer 6

Removes the last item of an array

Question 7

True or False: using the .pop() method will change the original array

Answer 7

True

Question 8

what does the .shift() method do?

Answer 8

Removes the first element from an array

Question 9

what does the .unshift() method do?

Answer 9

Adds one ore more elements to the beginning of an array

Question 10

what does the .slice() method do?

Answer 10

grabs a specified portion of your array. The original array will not be modified.

Question 11

what does the .indexOf() method do?

Answer 11

returns the first index at which a given element can be found in the array. Or, -1 if element is not found