Arrays Flashcards
1
Q
What are arrays used for?
A
storing a list of values that are related to each other.
2
Q
Describe array literal notation.
A
key = [ ‘value’, value, ]
3
Q
How are arrays different from “plain” objects?
A
in an array the key for each value is its index number
4
Q
What number represents the first index of an array?
A
0
5
Q
What is thelengthproperty of an array?
A
tells you how many items are in the array
6
Q
How do you calculate the last index of an array?
A
.length then subtract one
