Sometimes, we want to create an array of integers from 1 to 20 in JavaScript.
In this article, we’ll look at how to create an array of integers from 1 to 20 in JavaScript.
How to create an array of integers from 1 to 20 in JavaScript?
To create an array of integers from 1 to 20 in JavaScript, we use the fill and map methods.
For instance, we write
const arr = Array(20)
.fill()
.map((x, i) => i + 1);
to call Array with 20 to create an array with 20 empty slots.
Then we call fill to fill them with undefined.
And then we call map to map the entries to index i plus 1 and return the array with the mapped values.
Conclusion
To create an array of integers from 1 to 20 in JavaScript, we use the fill and map methods.
