How to Modify Keys and Values of an Array of Objects in JavaScript

Learn how to efficiently modify keys and values in an array of objects using JavaScript. This guide provides a step-by-step guide to transforming your data.
---

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: Modify key and values of an Array of Object and copy it into another Array of Object

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

In the world of JavaScript, working with arrays of objects is a common task. Whether you're fetching user data or managing configurations, you may often need to manipulate this data. Recently, a question arose regarding how to copy values from one array of objects to another while applying some specific modifications. In this guide, we'll explore a solution that meets several requirements for transforming data efficiently.

The Problem

You have an array of objects and you want to perform several operations before storing it in a new array. The requirements are as follows:

Exclude the type key from the new array.

Remove suffixes _applicant or _spouse from the keys.

Change boolean values: true should convert to "Y" and false to "N".

Source Data

Here’s what the original array looks like:

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

Expected Output

After processing, the destination array should fit the following structure:

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

The Solution

To achieve this transformation, we can utilize JavaScript's map() method combined with reduce(). Below is a detailed breakdown of the solution.

Step-by-Step Guide

Mapping through the Array: We will start with mapping over each object from MemberObj to begin the transformation.

Removing Unwanted Keys: Inside the mapping function, we'll spread rest properties (...rest) which effectively ignores the type key.

Modifying Keys and Values: Each remaining entry in the object will be processed:

Expand our object without the unwanted suffixes and translate boolean values.

Example Code

Here’s how you can implement the solution using the described steps:

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

Explanation of the Code

Destructuring: The code begins by destructuring the type key while capturing all other properties in rest.

The suffix from each relevant key is stripped using replace().

Boolean conversion is handled by a simple conditional.

Final Output: The modified properties are accumulated into a new object that's returned by the map() call.

Conclusion

By following these steps, you can efficiently transform data within an array of objects in JavaScript. Not only does this method help maintain clarity in your code, but it also adapts seamlessly to various data manipulation scenarios. Experiment with this approach to see how it can apply to your unique challenges. Happy coding!