javascript-arrays Flashcards
1
Q
What are arrays used for?
A
Used to store information in a numbered index list.
2
Q
Describe array literal notation.
A
Variables assigned with [ ].
3
Q
How are arrays different from “plain” objects?
A
Arrays have an index number order and objects don’t.
4
Q
What number represents the first index of an array?
A
0.
5
Q
What is the length property of an array?
A
It returns the amount of indexed values.
6
Q
How do you calculate the last index of an array?
A
Using array.length - 1.
