javascript-arrays Flashcards
1
Q
What are arrays used for?
A
Lists, data where order is important.
2
Q
Describe array literal notation.
A
Name of array = [ , , ];
3
Q
How are arrays different from “plain” objects?
A
You don’t know how many items there will be, numerically 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
Number of values in an array
6
Q
How do you calculate the last index of an array?
A
array.length - 1
