Javascript-Arrays Flashcards

1
Q

What are arrays used for?

A

lists of data

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2
Q

Describe array literal notation.

A

squared off brackets= []

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3
Q

How are arrays different from “plain” objects?

A

ordered list and objects don’t have ordered list

object is illteratble (NOT indexed)

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4
Q

What number represents the first index of an array?

A

0

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5
Q

What is the length property of an array?

A

Tells the total value of items inside an array

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6
Q

How do you calculate the last index of an array?

A

array.length-1

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