javascript-arrays

Question 1

What are arrays used for?

Answer 1

Lists, data where order is important.

Question 2

Describe array literal notation.

Answer 2

Name of array = [ , , ];

Question 3

How are arrays different from “plain” objects?

Answer 3

You don’t know how many items there will be, numerically 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

Number of values in an array

Question 6

How do you calculate the last index of an array?

Answer 6

array.length - 1