javascript-arrays Flashcards
1
Q
What are arrays used for?
A
Working with a list or a set of values that are related to each other. It doesn’t
just store one value; it stores a list of values.
2
Q
Describe array literal notation.
A
colors= [‘white’,
‘black’,
‘custom’];
vs
array constructor
3
Q
How are arrays different from “plain” objects?
A
“special” object, the key/property is the index number
4
Q
What number represents the first index of an array?
A
0
5
Q
What is the length property of an array?
A
property that holds the number of items in the array.
6
Q
How do you calculate the last index of an array?
A
array.length - 1
