April 2018
Beginner to intermediate
426 pages
10h 19m
English
The fill method fills the array with a value. For example, consider the following array:
let numbersCopy = Array.of(1,2,3,4,5,6);
The numbersCopy array has the length 6, meaning we have six positions. Let's use the following code:
numbersCopy.fill(0);
Here, the numbersCopy array will have all its positions with value ([0,0,0,0,0,0]). We can also pass the start index that we want to fill the array with, as follows:
numbersCopy.fill(2, 1);
In the preceding example, all the positions of the array will have the value 2, starting from position 1 ([0,2,2,2,2,2]).
It is also possible to pass the end index that we want to fill the array with:
numbersCopy.fill(1, 3, 5);
In the preceding example, we will fill the array with ...