javascript-arrays

Question 1

What are arrays used for?

Answer 1

Storing lists of data

Question 2

Describe array literal notation.

Answer 2

Square notations assigned to a variable as a value.

Question 3

How are arrays different from “plain” objects?

Answer 3

Arrays are numerically indexed, objects do not have a numerical index you can iterate over

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

Numeric value for the length of a given array

Question 6

How do you calculate the last index of an array?

Answer 6

Array.length – 1