How to generate range of numbers from 0 to n in ES2015 only?

javascript arrays ecmascript-6
Aditya Singh picture Aditya Singh · Apr 29, 2016 · Viewed 116.1k times · Source

I have always found the range function missing from JavaScript as it is available in python and others? Is there any concise way to generate range of numbers in ES2015 ?

EDIT: MY question is different from the mentioned duplicate as it is specific to ES2015 and not ECMASCRIPT-5. Also I need the range to be starting from 0 and not specific starting number (though it would be good if that is there)

Answer

Delapouite picture Delapouite · Apr 30, 2016

You can use the spread operator on the keys of a freshly created array.

[...Array(n).keys()]

or

Array.from(Array(n).keys())

The Array.from() syntax is necessary if working with TypeScript

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