How to use function recursion to realize array flattening in JavaScript

Editor to share with you how to use function recursion to achieve array flattening in JavaScript, I believe most people do not know much about it, so share this article for your reference. I hope you will gain a lot after reading this article. Let's learn about it together.

Array flattening refers to changing a multi-dimensional array into an one-dimensional array.

Const arr = [1, [2, [3, [4, 5]], 6]; / / = > [1, 2, 3, 4, 5, 6] function recursive const res5 = []; const fn = arr = > {for (let I = 0; I < arr.length; iota +) {if (Array.isArray (arr [I])) {fn (arr [I]);} else {res5.push (arr [I]);}} fn (arr) What are the characteristics of JavaScript 1. Js belongs to an interpretive scripting language 2. With the support of most browsers, js can run on a variety of platforms and has cross-platform characteristics. 3. Js is a weak type scripting language, which does not make strict requirements on the data types used, and can convert types, which is simple and easy to use. 4. Js language is highly secure and can only browse information or interact dynamically through the browser, so as to effectively prevent data loss. 5. Object-based scripting language, js can not only create objects, but also use existing objects.

These are all the contents of the article "how to use function Recursion to flatten arrays in JavaScript". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!