Sometimes, we want to generate range of numbers from 0 to n in JavaScript ES2015 only.
In this article, we’ll look at how to generate range of numbers from 0 to n in JavaScript ES2015 only.
How to generate range of numbers from 0 to n in JavaScript ES2015 only?
To generate range of numbers from 0 to n in JavaScript ES2015 only, we can use the array keys method.
For instance, we write
const nums = [...Array(n).keys()];
to use Array(n) to get an array with n empty slots.
Then we call keys on it to get the indexes of the array in an array.
Next, we use the spread operator to spread the indexes into a new array.
Conclusion
To generate range of numbers from 0 to n in JavaScript ES2015 only, we can use the array keys method.
