Shulou(Shulou.com)06/01 Report--

This article mainly shows you "how to use reduce in JavaScript to achieve array flattening", the content is easy to understand, clear, hope to help you solve your doubts, the following let Xiaobian lead you to study and learn "how to use reduce in JavaScript to achieve array flattening" this article.

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] use reduceconst flatten = arr = > {return arr.reduce ((pre, cur) = > {return pre.concat (Array.isArray (cur)? Flatten (cur): cur);}, [])} const res4 = flatten (arr); what is the role of JavaScript? 1, can embed dynamic text in HTML pages. 2. Respond to browser events. 3. Read and write HTML elements. 4. Verify the data before it is submitted to the server. 5. Detect the browser information of visitors. 6. Control cookies, including creation and modification, etc. 7. Server-side programming based on Node.js technology.

These are all the contents of the article "how to use reduce 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!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.