JavaScript Arrays Flashcards
1
Q
What are arrays used for
A
collection of items, or data, stored in contiguous memory locations, also known as database systems(ordered)
2
Q
Describe array literal notation.
A
a list of zero or more expressions, each of which represents an array element, enclosed in square brackets
3
Q
How are arrays different from “plain” objects?
A
numerically indexed and ordered
4
Q
What number represents the first index of an array?
A
0
5
Q
What is the length property of an array?
A
how many variables are inside the array
6
Q
How do you calculate the last index of an array?
A
the length minus 1 will equal the last index of the array
