JavaScript Arrays Flashcards
1
Q
What are arrays used for?
A
It is used for storing multiple values into a variable
2
Q
Describe array literal notation.
A
name a variable and assign it empty [ ] square brackets
3
Q
How are arrays different from “plain” objects?
A
instead of properties, values are given index numbers [1]
4
Q
What number represents the first index of an array?
A
[0]
5
Q
What is the length property of an array?
A
the number of values in an array
6
Q
How do you calculate the last index of an array?
A
array length minus 1
