Javascript-Arrays

Question 1

What are arrays used for?

Answer 1

lists of data

Question 2

Describe array literal notation.

Answer 2

squared off brackets= []

Question 3

How are arrays different from “plain” objects?

Answer 3

ordered list and objects don’t have ordered list

object is illteratble (NOT indexed)

Question 4

What number represents the first index of an array?

Answer 4

0

Question 5

What is the length property of an array?

Answer 5

Tells the total value of items inside an array

Question 6

How do you calculate the last index of an array?

Answer 6

array.length-1