A curated collection of awesome & free JavaScript books to help you learn the JavaScript programming language.
If you know of any other free JavaScript books that you think should be on this list, please let me know in the comments section and I will get them added.
| // The most straightforward way to do it is using recursion and reduce | |
| // In each iteration of the function we go deeper or return the element as an array | |
| // Subsequently we concat the arrays and finally get a complete flatten array | |
| const flattenArray = (array) => Array.isArray(array) ? array.reduce( (a, b) => a.concat(flattenArray(b)) , []) : [array]; |