Javascript-Arrays Flashcards
1
Q
What are arrays used for?
A
lists of data
2
Q
Describe array literal notation.
A
squared off brackets= []
3
Q
How are arrays different from “plain” objects?
A
ordered list and objects don’t have ordered list
object is illteratble (NOT indexed)
4
Q
What number represents the first index of an array?
A
0
5
Q
What is the length property of an array?
A
Tells the total value of items inside an array
6
Q
How do you calculate the last index of an array?
A
array.length-1
