javascript-arrays

Question 1

What are arrays used for?

Answer 1

Working with a list or a set of values that are related to each other. It doesn’t
just store one value; it stores a list of values.

Question 2

Describe array literal notation.

Answer 2

colors= [‘white’,
‘black’,
‘custom’];

vs

array constructor

Question 3

How are arrays different from “plain” objects?

Answer 3

“special” object, the key/property is the index number

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

property that holds the number of items in the array.

Question 6

How do you calculate the last index of an array?

Answer 6

array.length - 1