javascript-arrays Flashcards
1
Q
What are arrays used for?
A
used for storing lists of data, numerically indexed
2
Q
Describe array literal notation.
A
square brackets [ ]
3
Q
How are arrays different from “plain” objects?
A
numerically indexed from 0 while objects aren’t 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
it measures how long the array is; how many indexes are in an array
6
Q
How do you calculate the last index of an array?
A
array[array.length - 1]
