How to Store accounts Fields from an Array of Objects in JavaScript

Learn how to efficiently store `accounts` fields from an array of objects into a new array using JavaScript's powerful array methods.
---
This video is based on the question https://stackoverflow.com/q/71788233/ asked by the user '00robinette' ( https://stackoverflow.com/u/5228669/ ) and on the answer https://stackoverflow.com/a/71788523/ provided by the user 'PeterKA' ( https://stackoverflow.com/u/3558931/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Store item from array of objects in new array

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/licensing
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/by-sa/4.0/ ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/by-sa/4.0/ ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Storing accounts Fields from an Array of Objects in JavaScript

If you're working with JavaScript, you might find yourself managing complex data structures, especially arrays of objects. A common task developers face is extracting specific fields from these arrays. In this post, we’ll tackle a scenario where we have an array of objects, and we need to consolidate all the accounts fields into a single array, handling duplicates as well.

The Problem

Let's take a look at the structure of our data. We have an array that looks like this:

[[See Video to Reveal this Text or Code Snippet]]

From the above structure, our goal is to extract all the values from the accounts arrays and put them in a new, consolidated array. Additionally, we want to make sure that any duplicate values are removed.

The Solution

To achieve this, we can use a combination of JavaScript array methods. Specifically, we will utilize Array# flatMap for extracting the accounts fields, and new Set() for removing any duplicate values.

Step-by-Step Breakdown

Use flatMap: This method allows us to map each object to its accounts array and flatten the result into a single array.

Remove Duplicates with Set: Wrap the resulting array in a Set to ensure only unique values are retained and then convert it back into an array.

The Code

Here’s the final code snippet to accomplish this task:

[[See Video to Reveal this Text or Code Snippet]]

Explanation of the Code

Input Data: We defined our input array of objects.

flatMap Usage: The flatMap method iterates over the input array, destructuring each object to get its accounts property.

Unique Array: By using [...new Set(...)], we convert the Set back to an array containing only unique values.

Output: The output variable now contains only the distinct accounts from all objects.

Conclusion

This technique allows you to efficiently gather all accounts fields from an array of objects into a new array, while also eliminating duplicates. The combination of flatMap and Set makes it a powerful and elegant solution in JavaScript. Happy coding!

Видео How to Store accounts Fields from an Array of Objects in JavaScript канала vlogize