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This article will explain in detail how to achieve array dimensionality reduction in js. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

Array dimension reduction

Two-dimensional array

Let arr = [[1], [2], [3]] arr = Array.prototype.concat.apply ([], arr); / / [1,2,3] copy the code

Dimension reduction of multi-dimensional array

Let arr = [1,2, [3], [[4] arr = arr.flat (3) / / [1,2,3,4] copy the code

There is a compatibility problem with flat, but it is not a big problem on the mobile side. The browser side is not compatible with edge. Fill in Infinity to expand an array of arbitrary depth

This is the end of the article on "how to reduce the dimensionality of arrays in js". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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