How to flatten an array in JavaScript?

Do you know that you can flatten an array in JavaScript with one single method? This article tells you how to flatten a javascript array with the flat() array method.

Case:

I was looking for the straight solution to convert the multi-dimensional (nested) array into plan array.

So, I ended up on the solution which is flat(). Lets see how it can do wonders for you.

💥 It converts the nested array into plan array.

💪 Optionally, you can pass a depth parameter to decide your array depth. By default, it is 1.

😎 At the end, it returns the flattened new array

Output:

Deep flatten an array

You can also use Infinity as parameter for unlimited number of nested array conversion.

That's it! 😀

👉 I have a simple and quick guide for you about spread operator in JavaScript. Go ahead and learn about it.

You can learn more on MDN about flat array method.

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