在ES2016或更高版本中，像这样的列表理解等效于什么? [英] What's the equivalent of a list comprehension like this one in ES2016 or greater?

问题描述

Python 3.6:

Python 3.6:

[f"Cat #{n}" for n in range(5)]

给予

['Cat #0', 'Cat #1', 'Cat #2', 'Cat #3', 'Cat #4']

JavaScript的新功能，新EcmaScript中有什么等效功能?

New to JavaScript, What's the equivalent in new EcmaScript?

推荐答案

数组理解是为ES2016提出的，但从未发布到最终版本中. Firefox一度支持理解，但是在更高版本中不再支持.

Array comprehension in JS was proposed for ES2016, but never made it to the final release. Firefox supported comprehensions for a time, but the support was dropped in later versions.

您可以使用 Array#from 得到接近理解的东西.

You can use Array#from to get something close to comprehension.

const result = Array.from({ length: 5 }, (_, k) => `Cat #${k}`);

console.log(result);

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