如何在ES2015中生成从0到n的数字范围？ [英] How to generate range of numbers from 0 to n in ES2015 only?

问题描述

我一直发现JavaScript中缺少范围的功能，因为它在python等可用？是否有任何简明的方法来产生ES2015中的数字范围？

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 ?

编辑：我的问题与上述重复不同，因为它特定于ES2015而不是ECMASCRIPT-5。另外我需要从0开始的范围，而不是特定的开始号码（尽管如此，这样会很好）

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)

推荐答案

我还发现一个更直观的方式使用 Array.from ：

I also found one more intuitive way using Array.from:

const range = n => Array.from({length: n}, (value, key) => key)

这个范围函数将返回从0开始到n-1的所有数字

Now this range function will return all the numbers starting from 0 to n-1

范围的修改版本支持开始和结束是：

A modified version of the range to support start and end is:

const range = (start, end) => Array.from({length: (end - start)}, (v, k) => k + start);

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